Journal of Magnetism and Magnetic Materials最新文献_第10页

Bulk single crystal growth and magneto-transport properties of α-MnTe α-MnTe的块状单晶生长和磁输运性质

IF 2.5 3区材料科学

Journal of Magnetism and Magnetic Materials Pub Date : 2025-04-24 DOI: 10.1016/j.jmmm.2025.173106

Si Wu , Yanping Huang , Hao Song , Baomin Wang

{"title":"Bulk single crystal growth and magneto-transport properties of α-MnTe","authors":"Si Wu , Yanping Huang , Hao Song , Baomin Wang","doi":"10.1016/j.jmmm.2025.173106","DOIUrl":"10.1016/j.jmmm.2025.173106","url":null,"abstract":"<div><div>The collinear antiferromagnetic <em>α</em>-MnTe has recently attracted widespread attention as an altermagnet. Here, we reported the hexagonal and centimeter sized single crystals of <em>α</em>-MnTe are grown using the Sb-flux technique and a thorough characterization of their composition, structural, magnetic, and electric properties. The growth conditions were optimized by investigating the phase diagram of <em>α</em>-MnTe. The quality and compositional homogeneity of the crystals were examined through x-ray Laue diffraction and energy dispersive spectrometer. Room temperature x-ray powder diffraction and a structure refinement confirmed a single phase NiAs-type hexagonal structure with <em>P</em>6<sub>3</sub>/<em>mmc</em> space group. Magnetization measurements on a single crystal reveal the transition temperature of the antiferromagnetic correlations is around 310 K. We experimentally revealed that when magnetic field perpendicular to the in-plane direction can induce weak ferromagnetic behavior. Additionally, we investigated the electrical properties of <em>α</em>-MnTe under ambient and high pressures. At ambient pressure, the upturn in the resistance curve at low temperature can be attributed to electron weak localization behavior caused by quantum interference effects. Under high pressure, <em>α</em>-MnTe undergoes a structural phase transition to <em>γ</em>-MnTe. The first-principles calculation indicates that the weakening of <em>p</em>–<em>d</em> hybridization under pressure enhances the activity of localized <em>d</em>-electrons near the Fermi level in the conduction band. As pressure increases, the metallicity of MnTe is strengthened. Our research findings lay the foundation for further studies on <em>α</em>-MnTe as a promising candidate for altermagnetic applications.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"627 ","pages":"Article 173106"},"PeriodicalIF":2.5,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vorticity-induced magnetization of paramagnetic fluids in Taylor–Couette flow Taylor-Couette流中顺磁流体的涡度诱导磁化

IF 2.5 3区材料科学

Journal of Magnetism and Magnetic Materials Pub Date : 2025-04-23 DOI: 10.1016/j.jmmm.2025.173062

Peter Filip , Miloš Revallo , Lucia Fojtíková

{"title":"Vorticity-induced magnetization of paramagnetic fluids in Taylor–Couette flow","authors":"Peter Filip , Miloš Revallo , Lucia Fojtíková","doi":"10.1016/j.jmmm.2025.173062","DOIUrl":"10.1016/j.jmmm.2025.173062","url":null,"abstract":"<div><div>We investigate the effect of differential rotation of a paramagnetic fluid on its magnetization state in a cylindrical geometry. Assuming a differentially rotating fluid in the classical Taylor–Couette problem, the magnitude of the vorticity can be controlled by changing the geometry parameters of a cylindrical vessel and/or the rotation rates of its walls. There are two special cases of the flow, a regime with zero vorticity within the rotating fluid and another one with vanishing total angular momentum of the fluid. We point out that vorticity can be the quantity responsible for the self-magnetization of rotating paramagnetic fluids. By analogy with the Barnett effect, we derive an expression for the dipole magnetic field generated by a differentially rotating fluid via the vorticity-mediated mechanism. We propose experimental verification of the mechanism, based on the measurement of generated magnetic fields. The requirement of a stable laminar Taylor–Couette flow with azimuthal symmetry determines the choice of admissible cylindrical model parameters. The case of transient time-dependent flow exhibiting local increase of the vorticity close to cylindrical boundaries is discussed. We also present a quantitative estimate of the vorticity within differentially rotating layers inside the Sun and the Earth. Such considerations may allow to assess the role of the vorticity-induced mechanism in the magnetic field generation (initiation) inside celestial bodies.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"627 ","pages":"Article 173062"},"PeriodicalIF":2.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143881821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electronic, optical and magnetic properties of TM-doped CdTe nanosheet: First-principles calculations tm掺杂CdTe纳米片的电子、光学和磁性：第一性原理计算

IF 2.5 3区材料科学

Journal of Magnetism and Magnetic Materials Pub Date : 2025-04-23 DOI: 10.1016/j.jmmm.2025.173079

N.A. Ismayilova , Z.A. Jahangirli

{"title":"Electronic, optical and magnetic properties of TM-doped CdTe nanosheet: First-principles calculations","authors":"N.A. Ismayilova , Z.A. Jahangirli","doi":"10.1016/j.jmmm.2025.173079","DOIUrl":"10.1016/j.jmmm.2025.173079","url":null,"abstract":"<div><div>The electronic, magnetic, and optical properties of two-dimensional (2D) CdTe nanosheets (N.S.) with substitutional doping of transition metal atoms (Cr, Mn, Fe, Co, V, Cu) were investigated using density functional theory (DFT). To determine the stable magnetic phases, the total energies of doped nanosheets were optimized for various ferromagnetic and antiferromagnetic configurations. The findings reveal that, while the pristine nanosheet exhibits a non-magnetic, wide-bandgap (3.28 eV) semiconductor behavior, doping with transition metal atoms induces magnetic moments, leading to structural reconstruction around the dopant and its neighboring atoms. The Cr- and Co-doped CdTe nanosheets, exhibiting 100 % spin polarization, are promising candidates for spintronic devices due to their strong half-metallic ferromagnetic properties. The optical spectra of both pure and transition metal-doped CdTe nanosheets were calculated along the z-axis as a function of wavelength (λ). The computed optical properties include the complex dielectric function and absorption as a function of wavelength. These interesting results suggest that TM-doped CdTe nanosheets hold potential for applications in nanodevices and spintronic devices based on low-dimensional nanostructures.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"626 ","pages":"Article 173079"},"PeriodicalIF":2.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Microstructural, Electronic and Magnetic Properties of Nanocrystalline Compound Sm2ZrCo16: Effects of Annealing Temperature and Role of Intergranular Exchange Coupling 纳米晶化合物Sm2ZrCo16的显微组织、电子和磁性能分析：退火温度的影响和晶间交换耦合的作用

IF 2.5 3区材料科学

Journal of Magnetism and Magnetic Materials Pub Date : 2025-04-23 DOI: 10.1016/j.jmmm.2025.173085

R. Fersi , A. Reinhold , A. Pereira , A.P. Dalia

{"title":"Analysis of Microstructural, Electronic and Magnetic Properties of Nanocrystalline Compound Sm2ZrCo16: Effects of Annealing Temperature and Role of Intergranular Exchange Coupling","authors":"R. Fersi , A. Reinhold , A. Pereira , A.P. Dalia","doi":"10.1016/j.jmmm.2025.173085","DOIUrl":"10.1016/j.jmmm.2025.173085","url":null,"abstract":"<div><div>In this study, we investigated the microstructural, electronic, and magnetic properties of nanocrystalline Sm2ZrCo16 alloys. This compound adopts a trigonal structure with a space group P3̅m1 [164] and exhibits a Curie temperature TC of approximately 798 K. Quantitative analysis of the electronic structure, magnetic structure, exchange interactions (Jij), and band structure was performed using Density Functional Theory (DFT) calculations implemented in the Wien2k code. DFT calculations predicted a density of states indicating a pronounced ferromagnetic behavior. The mean-field theory (MFT) method was used to estimate the Curie temperature (T<sub>C</sub>) from the exchange interactions (J<sub>ij</sub>) obtained between different atoms, with an implementation of MFT in a Python code. We analyzed the influence of the annealing temperature (Ta) on the magnetic performances of these samples, with the main objective of identifying the mechanisms responsible for the improvement of the magnetic properties as a function of Ta. An analysis of the intergranular exchange coupling (IGEC) and grain size revealed that the coercivity (HC) reaches a maximum value of 29632 Oe at Ta = 898 K. This improvement is attributed to grain size optimization and enhanced IGEC, which improves magnetic anisotropy and resistance to magnetic domain reversion. However, higher annealing temperatures result in excessive grain growth, leading to a decrease in coercivity (HC). The novelty of this work lies in the precise identification of annealing conditions to maximize the magnetic properties of this compound, while exploring the crucial role of IGEC in these improvements. This research opens new perspectives for the design of high-performance nanostructured magnetic materials based on the Sm2ZrCo16 alloy.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"626 ","pages":"Article 173085"},"PeriodicalIF":2.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of plastic damage orientation with respect to magnetic flux pathway on magnetic performance for NGO electrical steel 磁通路径塑性损伤方向对NGO电工钢磁性能的影响

IF 2.5 3区材料科学

Journal of Magnetism and Magnetic Materials Pub Date : 2025-04-23 DOI: 10.1016/j.jmmm.2025.173066

Fanfu Wu, Lei Zhou, Soulard Juliette, Claire Davis

{"title":"Effect of plastic damage orientation with respect to magnetic flux pathway on magnetic performance for NGO electrical steel","authors":"Fanfu Wu, Lei Zhou, Soulard Juliette, Claire Davis","doi":"10.1016/j.jmmm.2025.173066","DOIUrl":"10.1016/j.jmmm.2025.173066","url":null,"abstract":"<div><div>Non-grain-oriented (NGO) electrical steel laminations are used in electric motor stators and rotors and are usually produced by stamping the complex shape from steel strip. It is known that the cut-edge damage, an unavoidable result of this process, adversely affects magnetic properties. During motor operation, magnetic flux flows through these regions, with pathways that may align parallel or perpendicular to the damage. This paper investigates the effect of flux orientation relative to cut-edge damage on the magnetic performance using both experimental measurements and 3D finite element modelling (FEM) for M250-35A NGO electrical steel. A novel tensile test specimen was designed to allow single-sheet tester (SST) samples (300 x 30 x 0.35 mm) to be extracted with comparable plastic damage levels (average 6.2 % strain) but varying orientations to the magnetic flux pathway. FEM simulations, developed in COMSOL Multiphysics, of the SST samples used BH curves for damaged and undamaged material to determine the magnetic behaviour for the SST samples with the different damage orientations. Experimental and modelled results showed consistent trends, revealing that both damage orientations deteriorate the magnetic performance compared to undamaged material, with damage perpendicular to the flux pathway giving more severe degradation. This effect was particularly notable at the BH curve knee point, where the perpendicular damage sample displayed a 20 % lower magnetic flux density than the parallel damage sample. These results highlight that motor performance will be affected not only by the extent of cut-edge damage but also by the design of the laminations through the magnetic flux pathways relative to the cut-edge damage, especially in areas operating below magnetic saturation.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"626 ","pages":"Article 173066"},"PeriodicalIF":2.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Robust spin polarization and giant magnetoresistance based on ferromagnetic bearded zigzag graphene nanoribbons 基于铁磁胡须之字形石墨烯纳米带的鲁棒自旋极化和巨磁电阻

IF 2.5 3区材料科学

Journal of Magnetism and Magnetic Materials Pub Date : 2025-04-22 DOI: 10.1016/j.jmmm.2025.173057

Sake Wang , Donghao Wang , Jiaming Yu , Hongyu Tian

{"title":"Robust spin polarization and giant magnetoresistance based on ferromagnetic bearded zigzag graphene nanoribbons","authors":"Sake Wang , Donghao Wang , Jiaming Yu , Hongyu Tian","doi":"10.1016/j.jmmm.2025.173057","DOIUrl":"10.1016/j.jmmm.2025.173057","url":null,"abstract":"<div><div>Ferromagnetic bearded zigzag graphene nanoribbons (GNRs) are proposed as promising candidates for achieving robust spin polarization and giant magnetoresistance (GMR). Numerical calculations using non-equilibrium Green’s function, based on a GNR device with width in the order of 10 nm, reveal significant spin-dependent transport properties under varying magnetizations and Fermi energy. In the parallel magnetization configuration, the conductance exhibits quantized plateaus of <span><math><mrow><msup><mrow><mi>e</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>/</mo><mi>h</mi></mrow></math></span>, corresponding to perfect spin polarization. In the antiparallel configuration, the conductance vanishes, ensuring a high GMR ratio. The spin-dependent band structure analysis demonstrates the half-metallic nature of the bearded GNRs, which act as conductors for one spin orientation while insulating the opposite. The spin-polarized current remains robust even in the presence of Anderson disorder, ensuring stability against localized scattering effects. The proposed GNR device operates as an efficient spin filter and valve. These findings highlight the potential of ferromagnetic GNRs for advanced spintronic applications, enabling electrically controlled spin-polarized transport and giant magnetoresistance in nanoscale devices.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"626 ","pages":"Article 173057"},"PeriodicalIF":2.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Origin of the classical magnetization discontinuities of the dodecahedron 十二面体经典磁化不连续的起源

IF 2.5 3区材料科学

Journal of Magnetism and Magnetic Materials Pub Date : 2025-04-22 DOI: 10.1016/j.jmmm.2025.173061

N.P. Konstantinidis

引用次数: 0

Magnetic characteristics of threaded cores with round iron wires in AC magnetic fields 交流磁场中圆形铁线螺纹磁芯的磁特性

IF 2.5 3区材料科学

Journal of Magnetism and Magnetic Materials Pub Date : 2025-04-22 DOI: 10.1016/j.jmmm.2025.173063

Eunchae Jung, Kyungsik Seo, Il Han Park

{"title":"Magnetic characteristics of threaded cores with round iron wires in AC magnetic fields","authors":"Eunchae Jung, Kyungsik Seo, Il Han Park","doi":"10.1016/j.jmmm.2025.173063","DOIUrl":"10.1016/j.jmmm.2025.173063","url":null,"abstract":"<div><div>This study explores the magnetic characteristics of threaded cores constructed with round cross-sectional iron wires, designed to mitigate eddy currents in magnetic devices. The threaded core comprised iron threads separated by an insulating material. Previous studies have demonstrated the remarkable efficacy of threaded cores in reducing eddy currents. These investigations employed iron threads with square cross-sectional structures. However, round cross-sectional wires are more prevalent in industrial applications owing to their productivity, cost-effectiveness, and superior mechanical properties. In this study, numerical and experimental analyses are conducted to examine the characteristics of round-wire threaded cores. In the numerical analysis, we compare the round-wire threaded core with other core types, namely the laminated core and square-wire threaded core, to assess their geometric attributes and magnetic performances. Additionally, further analysis is performed to examine the impact of round wire diameter on the magnetic performance of the threaded cores. The findings obtained from the numerical analysis are verified through experimental testing, which involves lab-made threaded cores using a commercially available round iron wire. This study reveals that round-wire threaded cores offer promising performance in reducing eddy currents, with smaller wire diameters exhibiting superior magnetic properties, particularly in high-frequency applications.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"625 ","pages":"Article 173063"},"PeriodicalIF":2.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unveiling the robustness of half-metallicity under strain effects of CoVYZ (Z = Si, Ge, Sn) alloys 揭示了CoVYZ （Z = Si, Ge, Sn）合金半金属性在应变效应下的鲁棒性

IF 2.5 3区材料科学

Journal of Magnetism and Magnetic Materials Pub Date : 2025-04-21 DOI: 10.1016/j.jmmm.2025.173068

Fareeha Fatima , Atia Atiq , Qura Tul Ain , Farah Andleeb , Altaf Hussain , Muhammad Amir Rafiq , Muhammad Nasir Rasul

{"title":"Unveiling the robustness of half-metallicity under strain effects of CoVYZ (Z = Si, Ge, Sn) alloys","authors":"Fareeha Fatima , Atia Atiq , Qura Tul Ain , Farah Andleeb , Altaf Hussain , Muhammad Amir Rafiq , Muhammad Nasir Rasul","doi":"10.1016/j.jmmm.2025.173068","DOIUrl":"10.1016/j.jmmm.2025.173068","url":null,"abstract":"<div><div>Based on density functional theory computations, a systematic analysis has been conducted to elucidate the physical attributes of CoVYZ (Z = Si, Ge, Sn) alloys. To treat the exchange and correlation effects, generalized gradient approximation has been incorporated using WIEN2k package. The structural characteristics assure that CoVYZ alloys are comparatively stable in magnetic phase and electronic properties reveal that these alloys are half-metallic. The band character spectra of CoVYZ alloys signify that the Fermi level is predominantly influenced by the dt<sub>2g</sub> bands of Co-atom. The calculated values of total magnetic moment found to be µ<sub>total=</sub> 3.0 <span><math><mrow><msub><mi>μ</mi><mi>B</mi></msub><mo>/</mo><mi>f</mi><mo>.</mo><mi>u</mi><mo>,</mo></mrow></math></span> pointing the Slater-Pauling rule, (<span><math><mrow><msub><mi>M</mi><mrow><mi>SPR</mi></mrow></msub><mo>=</mo><msub><mi>N</mi><mi>v</mi></msub><mrow><mo>-</mo><mn>24</mn><mo>)</mo></mrow><msub><mi>μ</mi><mrow><mi>B</mi><mo>.</mo></mrow></msub></mrow></math></span> In CoVYZ (Z = Si, Sn) alloys, Co exhibits ferrimagnetic coupling under specific strains: +1% to + 5 % for CoVYSi and at + 1 % for CoVYSn. At negative strains, a shift from antiferromagnetism to ferrimagnetism occurs with respect to the V atom: at −5% for Si, −7% for Ge and −10 % for Sn. The effect of uniform strain specifically on the electronic and magnetic characteristics revealed that half-metallicity sustain upto expansion (+6%<strong>@</strong> a<sub>o</sub>) and upto contraction (−13 %@ a<sub>o</sub>) distinctly. The CoVYSn alloy found most robust, rendering its suitability for spintronic applications under harsh environment.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"626 ","pages":"Article 173068"},"PeriodicalIF":2.5,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Origin of weak ferromagnetism in Ti doped Bi0.9Nd0.1FeO3 ceramics Ti掺杂Bi0.9Nd0.1FeO3陶瓷弱铁磁性的来源

IF 2.5 3区材料科学

Journal of Magnetism and Magnetic Materials Pub Date : 2025-04-21 DOI: 10.1016/j.jmmm.2025.173091

N.M. Hung , Q.N. Pham , T.Q. Hung , N.T.B. Yen , E. Riviere , N.T.M. Hong , T. Bongkarn , B.D. Nhi , D.V. Karpinsky , V.D. Binh , P.T. Tho , N.D. Long

{"title":"Origin of weak ferromagnetism in Ti doped Bi0.9Nd0.1FeO3 ceramics","authors":"N.M. Hung , Q.N. Pham , T.Q. Hung , N.T.B. Yen , E. Riviere , N.T.M. Hong , T. Bongkarn , B.D. Nhi , D.V. Karpinsky , V.D. Binh , P.T. Tho , N.D. Long","doi":"10.1016/j.jmmm.2025.173091","DOIUrl":"10.1016/j.jmmm.2025.173091","url":null,"abstract":"<div><div>The crystal structure, structural phase formation, ionic oxidation state and magnetic properties were studied for understanding the weak ferromagnetism of Ti doped Bi<sub>0.9</sub>Nd<sub>0.1</sub>FeO<sub>3</sub> compounds in the 10–400 K temperature range. The crystal structure analysis performed by X-ray diffraction and Raman scattering revealed a distorted rhombohedral structure in Ti-doped samples. X-ray photoelectron spectroscopy identified a significant fraction of oxygen vacancies (∼5 %) and about 38 % of Fe<sup>2+</sup> ions content which are the primary factors leading to a notable structural distortion. Magnetic measurements revealed the weak magnetic behavior in a wide temperature range. These observations have approved that titanium substitution is very effective tool to unlock the weak ferromagnetism; a mechanism responsible for the observed results is discussed in the context of lattice distortion, oxygen deficiency, and complex oxidation state of Fe ions. The release of a weak net magnetization in Ti-doped compounds is mainly caused by a disturbance of long-range incommensurate spin-cycloidal structure.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"625 ","pages":"Article 173091"},"PeriodicalIF":2.5,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0