Journal of Magnetism and Magnetic Materials最新文献

{"title":"Electron spin resonance study of the van der Waals ferromagnet Fe5GeTe2","authors":"Yang Yang , Fanying Meng , Wei Liu , Jingxin Li , Jing Zhang , Jiyu Fan , Chunlan Ma , Min Ge , Li Pi , Zhe Qu , Lei Zhang","doi":"10.1016/j.jmmm.2025.173251","DOIUrl":"10.1016/j.jmmm.2025.173251","url":null,"abstract":"<div><div>The van der Waals (vdW) material Fe<span><math><msub><mrow></mrow><mrow><mn>5</mn></mrow></msub></math></span>GeTe<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> is a promising candidate for spintronic applications due to its high Curie temperature (<span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>C</mi></mrow></msub></math></span>) and easily controllable properties. In this study, we thoroughly investigate the magnetic anisotropy of Fe<span><math><msub><mrow></mrow><mrow><mn>5</mn></mrow></msub></math></span>GeTe<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> single crystals using magnetization and electron spin resonance (ESR) techniques. We find that the magnetization for <span><math><mrow><mi>H</mi><mo>/</mo><mo>/</mo><mi>a</mi><mi>b</mi></mrow></math></span> is stronger than that for <span><math><mrow><mi>H</mi><mo>/</mo><mo>/</mo><mi>c</mi></mrow></math></span> below <span><math><mrow><msup><mrow><mi>T</mi></mrow><mrow><mo>∗</mo></mrow></msup><mo>∼</mo></mrow></math></span>100 K, exhibiting a weak easy-plane anisotropy (EPA). This EPA is significantly enhanced in the temperature range of <span><math><mrow><msup><mrow><mi>T</mi></mrow><mrow><mo>∗</mo></mrow></msup><mo><</mo><mi>T</mi><mo><</mo><msub><mrow><mi>T</mi></mrow><mrow><mi>C</mi></mrow></msub></mrow></math></span>, indicating an enhanced EPA effect. Meanwhile, the ESR spectra show weak intensity below <span><math><msup><mrow><mi>T</mi></mrow><mrow><mo>∗</mo></mrow></msup></math></span> while significantly anisotropic signals are observed in the enhanced EPA region, with stronger ESR intensity for <span><math><mrow><mi>H</mi><mo>/</mo><mo>/</mo><mi>a</mi><mi>b</mi></mrow></math></span> compared to that for <span><math><mrow><mi>H</mi><mo>/</mo><mo>/</mo><mi>c</mi></mrow></math></span>. The resonance fields (<span><math><msub><mrow><mi>H</mi></mrow><mrow><mi>r</mi></mrow></msub></math></span>) for <span><math><mrow><mi>H</mi><mo>/</mo><mo>/</mo><mi>a</mi><mi>b</mi></mrow></math></span> and <span><math><mrow><mi>H</mi><mo>/</mo><mo>/</mo><mi>c</mi></mrow></math></span> display opposite trends. The resonance field <span><math><msubsup><mrow><mi>H</mi></mrow><mrow><mi>r</mi></mrow><mrow><mi>a</mi><mi>b</mi></mrow></msubsup></math></span> for <span><math><mrow><mi>H</mi><mo>/</mo><mo>/</mo><mi>a</mi><mi>b</mi></mrow></math></span> shifts toward lower fields, while <span><math><msubsup><mrow><mi>H</mi></mrow><mrow><mi>r</mi></mrow><mrow><mi>c</mi></mrow></msubsup></math></span> for <span><math><mrow><mi>H</mi><mo>/</mo><mo>/</mo><mi>c</mi></mrow></math></span> moves toward higher fields upon cooling. This contrary trends of <span><math><msub><mrow><mi>H</mi></mrow><mrow><mi>r</mi></mrow></msub></math></span> for <span><math><mrow><mi>H</mi><mo>/</mo><mo>/</mo><mi>a</mi><mi>b</mi></mrow></math></span> and <span><math><mrow><mi>H</mi><mo>/</mo><mo>/</mo><mi>c</mi></mrow></math></span> are attributed to the effects of ","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"629 ","pages":"Article 173251"},"PeriodicalIF":2.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144471055","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}

{"title":"Magnetic anisotropy of Co/h-BN heterostructures: First principles calculations","authors":"Dian Putri Hastuti ,&nbsp;Yukie Kitaoka ,&nbsp;Hiroshi Imamura","doi":"10.1016/j.jmmm.2025.173282","DOIUrl":"10.1016/j.jmmm.2025.173282","url":null,"abstract":"<div><div>Magnetic anisotropy (MA) is an important characteristic of magnetic films for the application of spintronics devices such as magnetoresistive random access memories (MRAMs) and magnetic field sensors. Perpendicular MA is more suitable for MRAM, while in-plane MA is better for magnetic field sensor applications. Hexagonal boron nitride (h-BN) has recently attracted much attention as an efficient tunnel barrier for magnetic tunnel junctions with hexagonal symmetry. In this study, the magnetic anisotropy of a Co thin film deposited on h-BN is theoretically investigated using first-principles calculations. It is observed that a substantial perpendicular magnetocrystalline anisotropy (MCA) of the order of 1 mJ/m² is achieved for the film comprising 1 <span><math><mo>∼</mo></math></span> 5 Co atomic layers. The buckled structure of the h-BN layer at the interface is found to enhance the perpendicular MCA. The magnetic dipole energy is also calculated and is found to cause the in-plane MA for the films comprising 2 <span><math><mo>∼</mo></math></span> 5 Co atomic layers. The film comprising a monoatomic Co layer is found to be perpendicularly magnetised with an anisotropy constant of 1.68 mJ/m² and a voltage-controlled MA coefficient of -175 fJ/Vm, which are of the same order as those for the Fe/MgO film. In the case of in-plane magnetised films comprising 2 <span><math><mo>∼</mo></math></span> 5 Co atomic layers, the MA energy is found to be independent of the in-plane angle, which is a preferable characteristic for sensor applications. The results provide fundamental insights into the MA of Co/h-BN heterostructures and a foundation for developing voltage-controlled MRAM and magnetic field sensors based on this material.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"629 ","pages":"Article 173282"},"PeriodicalIF":2.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144534923","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}

{"title":"Study of magnetic, thermodynamic, and transport properties in orthorhombic GdNiAl3","authors":"S. Nallamuthu ,&nbsp;K. Arun ,&nbsp;A.R. Vimaljith ,&nbsp;Sergej Ilkovic ,&nbsp;Ivan Curlik ,&nbsp;Marian Reiffers ,&nbsp;R. Nagalakshmi","doi":"10.1016/j.jmmm.2025.173319","DOIUrl":"10.1016/j.jmmm.2025.173319","url":null,"abstract":"<div><div>The compound GdNiAl₃ crystallizes in an orthorhombic structure with the space group Pnma. Magnetization and heat capacity measurements reveal the presence of multiple magnetic transitions below the ordering temperature T_ord = 72.5 K, suggesting the existence of competing magnetic interactions within the system. This behavior is likely associated with the structural complexity of GdNiAl₃, which features randomly oriented Ni-centered tricapped trigonal prisms, further coordinated by additional aluminum atoms. Additionally, a ferromagnetic transition observed at 165.5 K is attributed to the presence of a GdAl₂ impurity phase.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"629 ","pages":"Article 173319"},"PeriodicalIF":2.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144471056","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}

{"title":"Broadband tunable YIG film resonator with high loaded-Q and spurious mode suppression","authors":"Xinan Fan ,&nbsp;Qinghui Yang ,&nbsp;Yuanjing Zhang ,&nbsp;Feng Wang ,&nbsp;Shanshan Du ,&nbsp;Lingtong Liu ,&nbsp;Ming Wang ,&nbsp;Huaiwu Zhang","doi":"10.1016/j.jmmm.2025.173289","DOIUrl":"10.1016/j.jmmm.2025.173289","url":null,"abstract":"<div><div>In this work, a broadband tunable high load factor (<span><math><msub><mrow><mi>Q</mi></mrow><mrow><mi>L</mi></mrow></msub></math></span>) resonator based on yttrium iron garnet (YIG) films is proposed. Single-crystal YIG wafers were prepared on [111] crystal-oriented GGG substrates by liquid phase epitaxy (LPE) technique, and the samples were thinned to 100 um by chemical–mechanical polishing process to obtain excellent crystal quality with magnetic resonance linewidths as low as 1.8 <span><math><mrow><mi>O</mi><mi>e</mi></mrow></math></span>. The resonator structure consists of an alumina ceramic substrate, a coplanar waveguide (CPW), and an open resonance ring (SRR). The CPW is used to excite magnetic resonance in the YIG film, and placing the YIG film on the backside of the CPW effectively enhances the uniformity of the microwave field, while the SRR structure further improves the uniformity of the magnetic field distribution. Experimental results demonstrate that the resonator exhibits excellent performance in the 5–25 GHz tuning range, with <span><math><msub><mrow><mi>S</mi></mrow><mrow><mn>11</mn></mrow></msub></math></span> parameters better than −5.2 dB, <span><math><msub><mrow><mi>Q</mi></mrow><mrow><mi>L</mi></mrow></msub></math></span> values above 700 and the maximum figure of merit (FOM) is 17.21 at 14 GHz. In addition, the resonator successfully suppresses the higher-order spurious modes and maintains good spectral characteristics, which is promising for the application in the field of ultra-wideband tunable devices and microwave systems.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"629 ","pages":"Article 173289"},"PeriodicalIF":2.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523377","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}

{"title":"Effect of Mn substitution on first order antiferromagnetic–ferromagnetic phase transition and magnetocaloric effect in FeRh","authors":"Rajeev Joshi ,&nbsp;Pramod R. Nadig ,&nbsp;Satish Yadav ,&nbsp;Suman Karmakar ,&nbsp;R. Rawat","doi":"10.1016/j.jmmm.2025.173217","DOIUrl":"10.1016/j.jmmm.2025.173217","url":null,"abstract":"<div><div>Influence of Mn substitution on the first order antiferromagnetic (AF) to ferromagnetic (FM) transition and magnetocaloric effect (MCE) in FeRh has been investigated. It shows that 1.2% Mn substitution for Fe in Fe₄₉Rh₅₁ decreases transition temperature to around 285 K. Though a majority of sample volume transforms with a hysteresis of <span><math><mo>≈</mo></math></span>10 K, a narrow hysteresis remains over a wide temperature (<span><math><mo>&gt;</mo></math></span> <span><math><mrow><mn>150</mn></mrow></math></span> K) and field (<span><math><mo>&gt;</mo></math></span> <span><math><mrow><mn>90</mn></mrow></math></span> kOe) range. The values of isothermal change in entropy (<span><math><mi>Δ</mi></math></span>S<span><math><msub><mrow></mrow><mrow><mi>t</mi><mi>h</mi></mrow></msub></math></span>) and adiabatic change in temperature (<span><math><mi>Δ</mi></math></span>T<span><math><msub><mrow></mrow><mrow><mi>a</mi><mi>d</mi></mrow></msub></math></span>) were found to be 14 J/kg-K and -7 K, respectively for 50 kOe magnetic field change which are comparable to the maximum values observed in FeRh system.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"629 ","pages":"Article 173217"},"PeriodicalIF":2.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490464","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}

{"title":"Magnetoelectric effect behavior in layered perovskite-type of (1-x) BaTiO3–X MgFe2O4 composites","authors":"Padmapriya Durairaj ,&nbsp;M.T. Rahul ,&nbsp;Kalarikkal Nandhakumar ,&nbsp;Muneeswaran Muniyandi ,&nbsp;N.V. Giridharan","doi":"10.1016/j.jmmm.2025.173317","DOIUrl":"10.1016/j.jmmm.2025.173317","url":null,"abstract":"<div><div>The room temperature multiferroic behavior of (1-x)BaTiO₃- xMgFe₂O₄ (x = 0.05, 0.15, 0.25, 0.35 and 0.45) 0–3 particulate and 2–2 laminated composites has been investigated. Powder X-Ray diffraction data confirms the formation of both perovskite tetragonal BTO and spinel cubic MFO phases coexist with the absence of impurity phases in the detectable limit. The SEM image of the composite samples provides an evidence for presence of two different phases (ferroelectric BTO and ferrite MFO) with different grain size and morphology. An enhancement of magnetization with the increase of ferrite molar fraction in the particulate composites reveals the unbalanced anti parallel spins between Fe³⁺ and Mg²⁺ ions attributes the magnetic property of the composites. Leakage, dielectric and ferroelectric properties of the particulate composites clearly shows leaky behavior of composites with the increase of MgFe₂O₄ concentration. Eventually, 0.65BaTiO₃–0.35MgFe₂O₄ laminated composite with sandwich structure showed better ME coupling than 2–2 laminated bilayer and 0–3 particulate ceramic composites.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"629 ","pages":"Article 173317"},"PeriodicalIF":2.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501211","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}

{"title":"Enhancing the Tb utilization efficiency and coercivity in high Ce content Nd-Fe-B magnets by Pr-Tb-Zn grain boundary diffusion","authors":"Zhibin Li ,&nbsp;Wenbing Fan ,&nbsp;Rongshun Lai,&nbsp;Haibo Xu,&nbsp;Xiaoxuan Zheng,&nbsp;Xin Wang,&nbsp;Qianji Wang,&nbsp;Bo Jiang,&nbsp;Xianglong Zhou,&nbsp;Qiang Ma","doi":"10.1016/j.jmmm.2025.173316","DOIUrl":"10.1016/j.jmmm.2025.173316","url":null,"abstract":"<div><div>Grain boundary diffusion is an effective method for improving the coercivity of Nd-Fe-B sintered magnets. However, the coercivity is not significantly enhanced after grain boundary diffusion in magnets with high Ce content due to the presence of the REFe₂ phase. In this study, we have designed a novel low-melting-point ternary diffusion source of Pr₅₃Tb₄₂Zn₅ that can effectively improve the diffusion efficiency and utilization of Tb, thereby significantly enhancing the coercivity of the magnets. After diffusion of Tb and Pr₅₃Tb₄₂Zn₅ in sintered magnets with 25.8 wt% Ce substituted, the coercivity of the magnets was enhanced from 1019.7 kA/m to 1412.9 and 1500.5 kA/m, respectively. Observations of the microstructure and element distribution showed that after diffusion of Tb and Pr₅₃Tb₄₂Zn₅, Tb penetrated the surface of the RE₂Fe₁₄B main phase grains and formed a Tb-rich shell, which significantly increased its anisotropy field. Compared to the Tb diffused magnets, the Pr₅₃Tb₄₂Zn₅ diffused magnets exhibited a more uniform distribution of the Tb-rich shell and a deeper diffusion depth. Additionally, transmission electron microscopy analysis indicated that in the Tb diffused magnets, some Tb elements were consumed by the REFe₂ phase, whereas in the Pr₅₃Tb₄₂Zn₅ diffused magnets, there was almost no Tb in the REFe₂ phase, which improved the utilization of Tb and resulted in a higher increment in coercivity.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"629 ","pages":"Article 173316"},"PeriodicalIF":2.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144479947","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}

{"title":"Structural, optical, and magnetic characterization of Ni-doped ZnSe nanoparticles","authors":"P. Kannappan ,&nbsp;Naveenkumar K.R. ,&nbsp;Kriti ,&nbsp;Asokan Kandasami ,&nbsp;R. Dhanasekaran","doi":"10.1016/j.jmmm.2025.173318","DOIUrl":"10.1016/j.jmmm.2025.173318","url":null,"abstract":"<div><div>Structural, optical, and magnetic characterizations of ZnSe and Ni-doped ZnSe nanoparticles prepared by the hydrothermal route are investigated. The powder X-ray diffraction (XRD) analysis reveals the cubic zinc blende structure. The surface morphology shows a spherical shape with an agglomerated structure. The optical absorption cutoff wavelength is ∼ 445 nm, and this absorption increases with Ni doping. The fluorescence study reveals the emission peaks at 468, 590, and 645 nm. The fluorescence study reveals the defect-level emissions and the near-band-edge emission. The vibrating sample magnetometer (VSM) study shows that pure and Ni-doped ZnSe nanoparticles exhibit room temperature ferromagnetism (RTFM) due to the presence of intrinsic defects in the synthesized samples. These defects induce a magnetic moment, which leads to ferromagnetism. A brief discussion on the mechanism for the origin of RTFM is also presented based on the above results. The pure and Ni-doped ZnSe nanoparticles with tuned magnetic properties are promising materials for spintronics applications.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"629 ","pages":"Article 173318"},"PeriodicalIF":2.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501210","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}

{"title":"Investigation of magnetocaloric properties and critical phenomenon of the intermetallic compound DyCoAl across magnetic transition","authors":"Mily Kundu,&nbsp;Sourav Sarkar,&nbsp;Kalyan Mandal","doi":"10.1016/j.jmmm.2025.173290","DOIUrl":"10.1016/j.jmmm.2025.173290","url":null,"abstract":"<div><div>Herein we report the magnetocaloric properties, critical analysis across magnetic phase transition and investigated their correlation for the ternary intermetallic compound DyCoAl that belongs to MgZn<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>-type structure with space group <em>P6</em><span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span><em>/mmc</em>. The nature of magnetic phase transition is investigated by conducting critical analysis in the vicinity of ferromagnetic-paramagnetic transition temperature (<span><math><mrow><mo>∼</mo><mn>37</mn></mrow></math></span> K) by means of modified Arrot plot, Kouvel-Fisher plot, critical isotherm, heat capacity data analysis as well as magnetocaloric study. We acquire the critical exponents <span><math><mrow><mi>α</mi><mo>∼</mo><mn>0</mn><mo>.</mo><mn>81</mn></mrow></math></span>, <span><math><mrow><mi>β</mi><mo>∼</mo><mn>0</mn><mo>.</mo><mn>20</mn></mrow></math></span>, <span><math><mrow><mi>γ</mi><mo>∼</mo><mn>0</mn><mo>.</mo><mn>77</mn></mrow></math></span>, <span><math><mrow><mi>δ</mi><mo>∼</mo><mn>4</mn><mo>.</mo><mn>8</mn></mrow></math></span>, <span><math><mrow><msub><mrow><mi>T</mi></mrow><mrow><mi>c</mi></mrow></msub><mo>∼</mo><mn>39</mn></mrow></math></span> K, validating their self-consistency and reliability through the Widom scaling law and scaling equations. The compound exhibits a very high relative cooling power (RCP) of <span><math><mrow><mo>∼</mo><mn>1319</mn></mrow></math></span> J/kg and a moderate adiabatic temperature change of <span><math><mrow><mo>∼</mo><mn>6</mn><mo>.</mo><mn>7</mn></mrow></math></span> K for a field change of 90 kOe. The mechanical efficiency of this compound is significantly larger compared to other refrigerants operating in cryogenic temperature range, positioning it as a promising candidate for various technological applications.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"629 ","pages":"Article 173290"},"PeriodicalIF":2.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490465","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}

{"title":"Investigating the influence of magnetization intensity on magnetoelectric coupling in MnxZn1-xFe2O4-PbZr0.5Ti0.5O3 multiferroic liquids","authors":"Haowen Mu ,&nbsp;Shubao Yang ,&nbsp;Weihao Wu ,&nbsp;Hong Ao ,&nbsp;Gang Meng ,&nbsp;Rongli Gao ,&nbsp;Xiaoling Deng ,&nbsp;Wei Cai","doi":"10.1016/j.jmmm.2025.173309","DOIUrl":"10.1016/j.jmmm.2025.173309","url":null,"abstract":"<div><div>The optoelectronic detectors made of multiferroic materials provide more possibilities for clinical diagnosis. In this study, Mn<em>_x</em>Zn₁<em>_-x</em>Fe₂O₄ (<em>x</em> = 0, 0.25, 0.5, 0.75, 1) magnetic nanoparticles were prepared using a solid-phase method, to investigate how the magnetization effect the magnetoelectric coupling effect, Mn<em>_x</em>Zn₁<em>_-x</em>Fe₂O₄-PbZr_0.5Ti_0.5O₃ multiferroic fluids were obtained by ball milling. Results show that as the concentration of Mn²⁺ ions (<em>x</em>) increases, the magnetization strength gradually increases, reaching a maximum saturation magnetization of 81.83 emu/g when <em>x</em> = 1. Additionally, the dielectric constant of the Mn_0.5Zn_0.5Fe₂O₄-PZT (<em>x</em> = 0.5) multiferroic fluids reaches a maximum value of 4.67. Under the application of an external magnetic field, the dielectric constant variation rate reaches a maximum of 78.43 % when <em>x</em> = 0.75. Ferroelectric performance studies show that when <em>x</em> = 0.75, the remnant polarization strength is 8.11 nC/cm², and the saturation polarization strength is 15.84 nC/cm². After applying a magnetic field, the remnant polarization strength variation rate reaches a maximum of 56.12 % at <em>x</em> = 0.5, yielding a coupling coefficient of 11.49 V/(cm∙Oe), demonstrating excellent magnetoelectric coupling performance. This study reveals the significant impact of magnetization strength on the performance of magnetoelectric composite multiferroic fluids, providing insights for further optimization of the magnetoelectric coupling coefficient.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"629 ","pages":"Article 173309"},"PeriodicalIF":2.5,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144338345","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}