Journal of Magnetism and Magnetic Materials最新文献

{"title":"Single-molecule Magnets (SMM) spin channels connecting FeMn antiferromagnet and NiFe ferromagnetic electrodes of a tunnel junction","authors":"Babu Ram Sankhi ,&nbsp;Erwan Peigney ,&nbsp;Hayden Brown ,&nbsp;Pius Suh ,&nbsp;Carlos Rojas-Dotti ,&nbsp;José Martínez-Lillo ,&nbsp;Pawan Tyagi","doi":"10.1016/j.jmmm.2024.172608","DOIUrl":"10.1016/j.jmmm.2024.172608","url":null,"abstract":"<div><div>The integration of single-molecule magnets (SMMs) into magnetic tunnel junctions (MTJs) offers significant potential for advancing molecular spintronics, particularly for next-generation memory devices, quantum computing, and energy storage technologies such as solar cells. In this study, we present the first demonstration of SMM-induced spin-dependent properties in an antiferromagnet-based MTJ molecular spintronic device (MTJMSD). We engineered cross-junction-shaped devices comprising FeMn/AlO_x/NiFe MTJs. The AlO_x barrier thickness where the exposed junction edges meet was comparable to the SMM length, facilitating the incorporation of SMM molecules as spin channels for spin-dependent transport. The SMM channels enabled long-range magnetic moment ordering around molecular junctions, which were precisely engineered via fabrication processes. The SMM, composed of a [Mn₆(μ₃-O)₂(H₂N-sao)₆(6-atha)₂(EtOH)₆] (H₂N-saoH = salicylamidoxime, 6-atha = 6-acetylthiohexanoate) complex, featured thioester groups at the ends that upon hydrolysis they form bonds with the magnetic electrodes. SMM-treated junctions demonstrated a significant current enhancement, reaching up to 7 μA at an input voltage of 60 mV. Furthermore, SMM-doped junctions exhibited current stabilization in the μA range at lower temperatures, whereas the bare electrodes showed current suppression to the picoampere range. Magnetization measurements conducted at 55 K and 300 K on pillar-shaped devices revealed a reduction in magnetic moment at low temperatures. Additionally, Kelvin probe atomic force microscopy (KPAFM) measurements confirmed that SMM integration transformed the electronic properties over long ranges.These findings are attributed to the spin channels formed between magnetic metal electrodes, which enhance spin polarization at each magnetic electrode. Our research highlights the potential of using antiferromagnetic materials, characterized by minimal stray fields and zero net magnetization, to transform MTJMSD devices.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"611 ","pages":"Article 172608"},"PeriodicalIF":2.5,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142537483","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":"Quasi-isothermal magnetocaloric effect in the DyAl2 alloy in magnetic field up to 14 T","authors":"A.S. Kuznetsov ,&nbsp;A.V. Mashirov ,&nbsp;I.I. Musabirov ,&nbsp;M.S. Anikin ,&nbsp;V.I. Mitsiuk ,&nbsp;Yu.S. Koshkid’ko ,&nbsp;J. Ćwik ,&nbsp;A.P. Kamantsev ,&nbsp;E.E. Kokorina ,&nbsp;K.A. Kolesov ,&nbsp;V.G. Shavrov","doi":"10.1016/j.jmmm.2024.172612","DOIUrl":"10.1016/j.jmmm.2024.172612","url":null,"abstract":"<div><div>Experimental and analytical studies were carried out on the magnetocaloric effect (MCE) in the rare-earth alloy of the Laves phase DyAl₂, which has the second-order magnetic phase transition (PT) in the region of cryogenic temperatures. The measurements are carried out using an extraction magnetic calorimeter with a Bitter electromagnet. A polycrystalline DyAl₂ sample was synthesized followed by heat treatment. X-ray diffraction and elemental chemical analyzes are provided. The magnetization of the sample was measured in magnetic fields up to 13.5<!--> <!-->T. Calculations of the entropy changes of the magnetic subsystem ΔS_mag are provided. Measurements of the MCEs ΔT − effect in adiabatic and ΔQ − effect in quasi-isothermal conditions were carried out. The MCE investigated by direct method in the temperature range of 15–110 K and magnetic field up to 14 T. It was found that the maximum of the adiabatic MCE in the region of the Curie temperature of the DyAl₂ alloy under adiabatic magnetization in a magnetic field of 14<!--> <!-->T is ΔT = 12.94<!--> <!-->K. The obtained values are well approximated by the <span><math><mrow><mi>Δ</mi><mi>T</mi><mo>∼</mo><mi>Δ</mi><msup><mrow><mi>H</mi></mrow><mrow><mn>2</mn><mo>/</mo><mn>3</mn></mrow></msup></mrow></math></span>, The maximum value of the quasi-isothermal MCE is ΔQ = 3.1<!--> <!-->kJ/kg. The value corresponds to the maximum of the entropy change of the magnetic subsystem ΔS_mag = 32.3<!--> <!-->J/(kg*K). The influence of thermal contact resistance (TCR) on the results of measuring the MCE under quasi-isothermal conditions is assessed.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"612 ","pages":"Article 172612"},"PeriodicalIF":2.5,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660778","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 circular dichroism of f-f electron transitions in Ho3+ and Nd3+ ions in antiferromagnetic crystal Ho0.75Nd0.25Fe3(BO3)4 in the region of spin-reorientation transition","authors":"A.V. Malakhovskii,&nbsp;V.V. Sokolov,&nbsp;A.L. Sukhachev,&nbsp;I.A. Gudim","doi":"10.1016/j.jmmm.2024.172613","DOIUrl":"10.1016/j.jmmm.2024.172613","url":null,"abstract":"<div><div>Absorption and magnetic circular dichroism (MCD) spectra have been studied in the region of ⁵<em>I</em>₈ → ⁵<em>F</em>₂, ⁵<em>S</em>₂, ⁵<em>F</em>₃, and ⁵<em>F</em>₅ absorption bands of the Ho³⁺ ion and in the region of ⁴<em>I</em>_9/2→⁴<em>G</em>_7/2, ²<em>K</em>_13/2, ⁴<em>S</em>_3/2, ⁴<em>F</em>_7/2, ⁴<em>F</em>_5/2 and ²<em>H</em>_9/2 absorption bands of the Nd³⁺ ion in an antiferromagnetic trigonal crystal Ho_0.75Nd_0.25Fe₃(BO₃)₄ in the temperature range from 5 to 90 K. A qualitative change in the shape of the MCD spectra of Ho³⁺ ion was revealed during the spin-reorientation transition at <em>T</em>_R = 6.9 К. Below <em>T_R</em>, in the easy-axis state of the crystal, the MCD spectrum has a shape typical for paramagnets, i.e., it consists of diamagnetic and paramagnetic parts. Just above <em>T</em>_R, in the easy-plane state of the crystal, MCD of Ho³⁺ ion has a spectrum similar to the absorption spectrum, which is typical for the paramagnetic part of the MCD. It was shown, that in the easy-plane state the exchange field of iron, being perpendicular to the external field directed along the <em>C</em>₃ axis, quenches the usual paramagnetic and diamagnetic MCD in Ho³⁺ ion, but creates a condition for the appearance of a large paramagnetic MCD of mixing (<em>B</em>-term). With temperature increasing, the MCD spectrum of Ho³⁺ ion gradually turns into a spectrum typical for paramagnets with the predominance of the sign-changing diamagnetic part, because the influence of the exchange field decreases. The shape of the MCD spectra of Nd³⁺ ions are typical for paramagnets but does not change during the reorientation transition in the rest of the crystal. This means that the magnetic moment of the Nd³⁺ ion does not make a reorientation transition simultaneously with the Fe³⁺ and Ho³⁺ ions of the rest of the crystal. This phenomenon is accounted for by a strong local magnetic anisotropy of the Nd³⁺ ion and by a weak exchange interaction Fe-Nd, which is not enough for rotation of the Nd³⁺ ion moment synchronously with that of the Fe³⁺ ion. The magneto-optical properties of neodymium are controlled by the easy-axis anisotropy of neodymium.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"611 ","pages":"Article 172613"},"PeriodicalIF":2.5,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571660","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":"Magnetocaloric effect, magnetotransport and magnetic properties of polycrystalline Pr(0.65-x)GdxSr0.35MnO3 (x ≤ 0.3) compounds","authors":"Roman Atanasov,&nbsp;Marc du Plessis,&nbsp;Razvan Hirian,&nbsp;Rares Bortnic,&nbsp;Gabriela Souca,&nbsp;Iosif Grigore Deac","doi":"10.1016/j.jmmm.2024.172605","DOIUrl":"10.1016/j.jmmm.2024.172605","url":null,"abstract":"<div><div>Polycrystalline Pr_0.65-xGd_xSr_0.35MnO₃ (x = 0.01, 0.05, 0.1, 0.2, 0.3) manganites were prepared by conventional solid-state method. Structural analysis has revealed a change in structure with x  = 0.2, from Rhombohedral (<em>R-3c</em>) to Orthorhombic (<em>Pbnm</em>) symmetry. Small oxygen deficiency was found in the samples. The electrical measurements revealed typical colossal magnetoresistance (<em>CMR</em>) behavior, with single metal–insulator peak at <em>T_p</em> for all investigated samples. The small polaron hopping (<em>SPH</em>) and variable-range hopping (<em>VRH</em>) models were used to describe the electrical conduction above <em>T_p.</em> Magnetic measurements show an increase in magnetization below the Curie temperature, <em>T</em>_C. Values of <em>T_c</em> diminish with increasing Gd³⁺ content. Isothermal measurements around critical points suggest a possible interaction between the 4f-ions and Mn-sublattice The magnetic critical behavior analysis established the tri-critical mean-field model to be the governing model for the series. Large magnetic entropy change Δ<em>S</em>_M at near room temperature (278 K) was exhibited by the x  = 0.01 sample at 2.2 J/kgK in μ₀Δ<em>H</em> = 1 T and 5.36 J/kgK in μ₀Δ<em>H</em> = 4 T. The largest <em>|</em>ΔS_M<em>|</em> value was shown by the x  = 0.1 sample. The values of the relative cooling power (<em>RCP</em>) and the temperature-averaged entropy change (<em>TEC</em>) increased with substitution qualifying these compounds as magnetocaloric materials.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"611 ","pages":"Article 172605"},"PeriodicalIF":2.5,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142537480","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":"Searching for a Lifshitz point in the magnetic phase diagram of UNi2Si2","authors":"Magdalena Majewicz,&nbsp;Maria Szlawska","doi":"10.1016/j.jmmm.2024.172601","DOIUrl":"10.1016/j.jmmm.2024.172601","url":null,"abstract":"<div><div>A single crystal of UNi₂Si₂ has been grown by the Czochralski pulling technique. Its physical properties have been studied over a wide range of temperatures and magnetic field strengths. The main aim of the studies was to construct a magnetic phase diagram of the compound in order to verify the hypothesis of the existence of a Lifshitz point in it. Our studies showed that the boundaries between paramagnetic, modulated and uniform magnetic phases do not merge up to 14 T.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"611 ","pages":"Article 172601"},"PeriodicalIF":2.5,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534512","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":"Exchange-biased quantum tunneling of magnetization in a nanomagnetic dimer via a Josephson current","authors":"Gwang-Hee Kim","doi":"10.1016/j.jmmm.2024.172598","DOIUrl":"10.1016/j.jmmm.2024.172598","url":null,"abstract":"<div><div>We investigate a Josephson junction where the weak link consists of a nanomagnetic dimer, featuring two large, antiferromagnetically coupled spins under simple easy-axis anisotropy. In this setup, the exchange coupling constant serves as a transverse anisotropy constant, and the quantum tunneling of the magnetization is influenced by the supercurrent, which behaves like an external magnetic field applied along the hard axis. Our results demonstrate that the superconducting current induces non-Kramers freezing and unfreezing of the magnetic moment’s tunneling within a biaxial spin model driven by exchange interaction. We derive an exact expression for the quenching condition caused by the exchange coupling. Additionally, we extend our analysis to tunneling phenomena in two antiferromagnetically or ferromagnetically coupled spins biased by the anisotropic exchange interaction, revealing more varied cases of tunnel splitting.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"611 ","pages":"Article 172598"},"PeriodicalIF":2.5,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571694","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":"Magneto-electronic and optoelectronic attributes of half-Heusler VXPt (X = Br, Se) alloys: A first-principles study","authors":"Faiza Firdous ,&nbsp;Saif M.H. Qaid ,&nbsp;Abdullah S. Aldwayyan ,&nbsp;Abdullah Ahmed Ali Ahmed ,&nbsp;Junaid Munir","doi":"10.1016/j.jmmm.2024.172611","DOIUrl":"10.1016/j.jmmm.2024.172611","url":null,"abstract":"<div><div>High-spin polarized magnetic materials might be useful in spintronics applications. The spin-polarized magnetic, optical, electronic and structural attributes of half-Heusler VXPt (X = Br, Se) alloys were theoretically explored and calculated using the WIEN2k code. The ground states of the structures are optimized, and the bulk moduli and lattice constants are computed. The values obtained from the formation energies show their stability. For VBrPt, an energy gap is present in major and minority spin carriers, while for VSePt, major spin carriers exhibit an energy gap and metallic character is seen in minority spin carriers. The band structures are further illustrated deeply through the investigation of density of states. The electron density graphs depict the ionic bonding in both alloys. The magnetic moments are additionally assessed, and the recorded values support the magnetic characteristics of VBrPt and VSePt. The assessment of how the studied alloys react to light is determined by computing various parameters. The imaginary component and absorption coefficient anticipate substantial light absorption within the visible region. The calculated outcomes unveiled the potential of the examined alloys for applications in spintronics.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"611 ","pages":"Article 172611"},"PeriodicalIF":2.5,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142537343","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":"Critical behavior and tunable magnetocaloric effect in (Gd1-xErx)3Al2 alloys","authors":"Lina Jiang ,&nbsp;Cuicui Hu ,&nbsp;Yang Chen ,&nbsp;Fang Tang ,&nbsp;Haifeng Chen ,&nbsp;Zilu Xia ,&nbsp;Yong Fang ,&nbsp;Bin Qian ,&nbsp;Haicheng Xuan ,&nbsp;Zhida Han","doi":"10.1016/j.jmmm.2024.172606","DOIUrl":"10.1016/j.jmmm.2024.172606","url":null,"abstract":"<div><div>The magnetic properties, magnetocaloric effect, and the critical behavior near Curie temperature (<em>T_C</em>) were systematically studied in a series of (Gd_1-<em>_x</em>Er<em>_x</em>)₃Al₂ (<em>x</em> = 0, 0.1, 0.2, 0.3) alloys. As the Er content increases, both the <em>T_C</em> and lattice constant gradually decrease. The maximum magnetic entropy change and refrigerant capacity remain relatively high, ranging from −5.8 to −8.5J/kg K and 209.0 to 290.8 J/kg respectively, for a field change of 5 T. The critical exponents, derived from the field dependence of magnetic entropy change, conform to scaling theory and are consistent with those obtained using the Kouvel–Fisher method. These findings suggest that the reliability of the obtained critical exponents and imply the presence of long-range exchange interactions in (Gd_1-<em>_x</em>Er<em>_x</em>)₃Al₂ alloys.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"611 ","pages":"Article 172606"},"PeriodicalIF":2.5,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534347","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 on microwave absorbing properties of reduced graphene oxide@Co/Fe81.5Si3B9P3C1Cu1Ti1.5 amorphous nanocrystalline composite","authors":"Bao Zhu ,&nbsp;Bingwen Zhou ,&nbsp;Ruiduan Lin ,&nbsp;Mengnan Lv ,&nbsp;Xingguo Zhang","doi":"10.1016/j.jmmm.2024.172590","DOIUrl":"10.1016/j.jmmm.2024.172590","url":null,"abstract":"<div><div>Electromagnetic pollution problems and military stealth technology need to be solved, the development of new wave absorbing materials has been imminent. In this study, reduced graphene oxide@Co (rGO@Co) powder is obtained by alcoholthermal method, afterwards the different contents of rGO@Co powders are also compounded with Fe_81.5Si₃B₉P₃C₁Cu₁Ti_1.5 nanocrystalline powder by high-energy ball milling, obtaining rGO@Co/Fe_81.5Si₃B₉P₃C₁Cu₁Ti_1.5 nanocrystalline composite powder, and powder morphology, the nuclear layer structure, soft magnetic properties and corresponding absorbing properties of the materials are studied. The research results are that rGO coats Co and Fe-based nanocrystalline of double magnetic cores in the composite powder, which realizes the synergy of the two magnetic cores to enhance the magnetic loss, is also compatible with the dielectric loss of rGO, and also improves the impedance matching. The minimum reflection loss (<em>RL_min</em>) is −44.18 dB, and the maximum effective absorption bandwidth (EAB) is 5.03 GHz in the amorphous nanocrystalline alloy matrix. When the addition of rGO@Co powder is 1 wt%, the <em>RL_min</em> of composite powder is −52.41 dB (3 mm), which is increased by 18.6 %. The EAB is 6.07 GHz (2 mm), which is increased by 20.7 %.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"611 ","pages":"Article 172590"},"PeriodicalIF":2.5,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142537344","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":"A novel grain refinement of Ce-Fe-B magnets induced by magnetic field annealing","authors":"Kehan Zhang,&nbsp;Zhongxing Mao,&nbsp;Haonan Li,&nbsp;Yubing Xia,&nbsp;Xiaohua Tan,&nbsp;Hui Xu","doi":"10.1016/j.jmmm.2024.172607","DOIUrl":"10.1016/j.jmmm.2024.172607","url":null,"abstract":"<div><div>Magnetic field annealing-induced grain refinement usually occurs during the crystallization process of amorphous alloys. This work investigates the effects of magnetic field annealing on the microstructure and magnetic properties of crystalline Ce₁₇Fe₇₆Co₁Zr_0.5B₆Mo_0.5 alloys. The results indicate that magnetic field annealing below the Curie temperature (T_C) of the Ce₂Fe₁₄B phase in the alloys reduces the alloy’s grain size. At an annealing temperature of 433 K, the average grain size of alloys decreased from 48.0 nm in the as-spun sample to 27.2 nm in the magnetic field annealing sample. Moreover, magnetic field annealing can effectively reduce the volume fraction of the CeFe₂ phase in the alloy. After magnetic field annealing at 433 K, the alloy obtained the optimal comprehensive magnetic properties: the intrinsic coercivity (H_ci = 441.1 kA/m), remanence (B_r = 0.49 T), squareness (H_k/H_ci = 0.53), and maximum energy product ((BH)_max) = 35.5 kJ/m³), which were 0.2 %, 16.7 %, 6 %, and 29.1 % higher than the values of the as-spun sample, respectively. Precession electron diffraction (PED) analysis revealed that magnetic field annealing increased strain at grain and phase boundaries and a more uniform grain orientation spread (GOS), promoting recrystallization and grain refinement. This study provides new insights into the grain refinement mechanism of crystalline alloys under magnetic field annealing, contributing to further improving the magnetic properties of Ce-Fe-B magnets.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"611 ","pages":"Article 172607"},"PeriodicalIF":2.5,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535061","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}