Journal of Magnetism and Magnetic Materials最新文献

{"title":"Evidence of rotational and tilting disorder of ReO6 octahedra in single crystals of a 5d1 double perovskite Ba2CaReO6","authors":"Alasdair Nicholls ,&nbsp;Jian-Rui Soh ,&nbsp;Yikai Yang ,&nbsp;Alessandro Bombardi ,&nbsp;Daigorou Hirai ,&nbsp;Henrik M. Rønnow ,&nbsp;Ivica Živković","doi":"10.1016/j.jmmm.2025.173516","DOIUrl":"10.1016/j.jmmm.2025.173516","url":null,"abstract":"<div><div>We present results of an experimental study on single crystals of a 5<em>d</em><span><math><msup><mrow></mrow><mrow><mn>1</mn></mrow></msup></math></span> double perovskite Ba₂CaReO₆. Magnetization measurements reveal a weak splitting between zero-field-cooled and field-cooled protocols below 12<!--> <!-->K. At magnetic fields above 1<!--> <!-->T the splitting is absent and the magnetic susceptibility is featureless. A detailed specific heat study in a wide temperature range and comprising different heat pulses did not reveal any indication of a thermodynamic phase transition. At low temperatures we do observe specific heat deviating from a phonon background, leading to a total electronic entropy release of <span><math><mrow><mo>∼</mo><mi>R</mi><mi>l</mi><mi>n</mi><mn>2</mn></mrow></math></span>. Resonant and non-resonant x-ray diffraction of characteristic Bragg peaks indicates a significant presence of disorder, potentially related to random tilts and rotations of rigid ReO₆ octahedra.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"632 ","pages":"Article 173516"},"PeriodicalIF":3.0,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156465","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 biaxial strain and carrier doping on intrinsic valley polarization in 2H-RuCl2 Monolayer","authors":"Md. Azaharuddin Ahmed ,&nbsp;Abdul Lahil Safi ,&nbsp;Hirak Kumar Chandra ,&nbsp;Bidisa Chattopadhyay","doi":"10.1016/j.jmmm.2025.173478","DOIUrl":"10.1016/j.jmmm.2025.173478","url":null,"abstract":"<div><div>We perform a comprehensive first-principles investigation of the electronic, magnetic, and topological properties of monolayer (ML) 2H-RuCl<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> under biaxial strain and carrier doping. At equilibrium, the material exhibits a ferromagnetic (FM) ground state with a significantly enhanced magnetic anisotropy energy (MAE) of 1.87 meV/Ru and a Curie temperature (T<span><math><msub><mrow></mrow><mrow><mi>c</mi></mrow></msub></math></span>) of approximately 280 K, positioning it near the threshold of room-temperature operation. Upon application of biaxial tensile strain, we observe a distinct spin reorientation from out-of-plane to in-plane magnetic anisotropy at 3.7%, explained via an orbital-resolved projected density of states (PDOS) analysis which reveals a shift in the unoccupied density from <span><math><msub><mrow><mi>d</mi></mrow><mrow><msup><mrow><mi>z</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></msub></math></span> to in-plane orbitals <span><math><msub><mrow><mi>d</mi></mrow><mrow><mi>x</mi><mi>y</mi></mrow></msub></math></span> and <span><math><msub><mrow><mi>d</mi></mrow><mrow><msup><mrow><mi>x</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>−</mo><msup><mrow><mi>y</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></msub></math></span>. The system also hosts two half-valley-metal (HVM) phases HVM1 and HVM2 at tensile strains 1.7% and 3.2%, respectively. Unlike previous reports, we find that the out-of-plane anisotropy is retained throughout the entire HVM1–HVM2 regime (1.7%–3.2% strain), enhancing the stability of the valley-polarized and topological states. Notably, we identify a correlation between the minimum of the exchange energy (<span><math><mrow><msub><mrow><mi>E</mi></mrow><mrow><mi>e</mi><mi>x</mi></mrow></msub><mo>=</mo><msub><mrow><mi>E</mi></mrow><mrow><mi>A</mi><mi>F</mi><mi>M</mi></mrow></msub><mo>−</mo><msub><mrow><mi>E</mi></mrow><mrow><mi>F</mi><mi>M</mi></mrow></msub></mrow></math></span>) and the emergence of the quantum anomalous Hall (QAH) phase, both occurring near 2.4% strain. Finally, we examine the influence of carrier doping and find that both electron and hole doping modify the magnitude of MAE and valley polarization, offering an external control mechanism without altering the easy axis orientation. These results highlight 2H-RuCl<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> as a versatile 2D material platform with tunable magnetic and topological features suitable for next-generation spintronic and valleytronic applications.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"632 ","pages":"Article 173478"},"PeriodicalIF":3.0,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156469","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":"Paramagnetic spin disorder on ferrimagnetic surface and dual dip microwave absorption for hydrothermally synthesized coral shaped NiCo2O4-rGO composite","authors":"Manas Kumar Mondal ,&nbsp;Chandi Charan Dey ,&nbsp;Nupur Bhakta ,&nbsp;Sukhendu Sadhukhan ,&nbsp;Souvick Das ,&nbsp;Anupam Banerjee ,&nbsp;P.K. Chakrabarti","doi":"10.1016/j.jmmm.2025.173515","DOIUrl":"10.1016/j.jmmm.2025.173515","url":null,"abstract":"<div><div>Nanoparticles of NiCo₂O₄ was synthesized using hydrothermal technique and to enhance the synergistic effect in microwave absorption it was incorporated in reduced graphene oxide (rGO). Recorded X-ray diffractograms and their Rietveld refinement confirmed the desired crystallographic phase formation. Microstructure and morphological information from transmission and scanning electron microscopy ensured the presence of rGO in NiCo₂O₄-rGO phase. Also, morphological features confirmed the presence of nanoparticles of NiCo₂O₄ in the matrix of rGO. Magnetic properties confirmed the paramagnetic spin disorder on the surface of the ferrimagnetic core. Here, the magnetic and non-magnetic component in the nanocomposite have been chosen to ensure enhancement of microwave absorption originated from the tuning of magnetic and dielectric behaviour. Interestingly, the combined contributions of magnetic NiCo₂O₄ and electroactive rGO make this NiCo₂O₄-rGO nanocomposite system a distinctive material for microwave enhancement. Reflection loss property of NiCo₂O₄-rGO nanocomposite has achieved the dual dip reflection loss of −44.49 dB at 15.12 GHz and − 43.61 dB at 15.63 GHz. Incorporation of rGO influences the magnetic anisotropy, increasing the attenuation constant and decreasing the skin depth, which further improves the microwave absorption and broadens the effective bandwidth. The optimisation of wave and matter interaction results the superior reflection loss, making the NiCo₂O₄-rGO system an ideal one for microwave device applications.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"632 ","pages":"Article 173515"},"PeriodicalIF":3.0,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156460","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":"Crystal structure, magnetic property and cryogenic magnetocaloric effect in the antiferromagnetic Ba5Zn4Gd8O21 oxide","authors":"Guangyi Sun ,&nbsp;Miao Zhang ,&nbsp;Pengyu Wang ,&nbsp;Xinyue Ye ,&nbsp;Zhenqian Zhang","doi":"10.1016/j.jmmm.2025.173533","DOIUrl":"10.1016/j.jmmm.2025.173533","url":null,"abstract":"<div><div>Cryogenic magnetic refrigeration based on the magnetocaloric effect (MCE) plays a vital role in the field of many technologies, thereby searching for magnetocaloric materials with superior magnetocaloric performances is essential for this field. Here, we have successfully fabricated the polycrystalline Ba₅Zn₄Gd₈O₂₁ oxide with the tetragonal structure (space group: <em>I</em>4/<em>m</em>) by solid-state reaction, and a comprehensive study is conducted on its magnetic property and cryogenic MCE performance by field-dependent magnetization measurement. The analysis of magnetic susceptibility curves in a static magnetic field <em>H</em> = 0.1 T reveals that the Ba₅Zn₄Gd₈O₂₁ oxide order antiferromagnetically at Néel temperature (<em>T</em>_N ≈ 3.6 K). Meanwhile, it exhibits large conventional and inverse cryogenic MCEs due to field induced first-order magnetic phase transition below <em>T</em>_N. The comprehensive magnetocaloric performances are obtained indirectly from the isothermal field-dependent magnetization data, which yields the maximum magnetic entropy change, temperature-averaged entropy change (7 K), refrigerant capacity and relative cooling power values of 16.02 J/kg∙K, 13.91 J/kg∙K, 146.37 J/kg and 178.83 J/kg under the magnetic field change (Δ<em>H</em>) of 0–7 T, respectively. These valuable magnetic and magnetocaloric data provide evidence that the Ba₅Zn₄Gd₈O₂₁ oxide is a promising material for cryogenic magnetic refrigeration, which highlights the potential of Gd-based oxides in this field.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"632 ","pages":"Article 173533"},"PeriodicalIF":3.0,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156470","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":"Fabrication and physical properties of the ferrimagnetic half-metallic Cr2MnAl films and nanowire arrays","authors":"Chunhai Liu ,&nbsp;Xuefang Dai ,&nbsp;Liying Wang ,&nbsp;Yuhao Si ,&nbsp;Cong Liu ,&nbsp;Lei Jin ,&nbsp;Ying Liu ,&nbsp;Xiaoming Zhang ,&nbsp;Guodong Liu","doi":"10.1016/j.jmmm.2025.173534","DOIUrl":"10.1016/j.jmmm.2025.173534","url":null,"abstract":"<div><div>Cr₂MnAl alloy was predicted to be a half-metallic ferrimagnet exhibiting metallic behavior in the spin-down channel and a semiconducting gap in the spin-up channel when crystallized in the Hg₂CuTi structure. However, this phase has not yet been experimentally synthesized. Here, we report the successful fabrication of Hg₂CuTi-structured Cr₂MnAl alloy in the form of thin films and nanowire arrays via magnetron sputtering. The degree of atomic ordering in Cr₂MnAl is close relative to the growth temperature. When the growth is set to room temperature, the optimal atomic ordering is achieved, resulting in a film with a saturation magnetization of 2 μ_B/f.u., consistent with the theoretical value of Hg₂CuTi-type atomic arrangement. The film exhibits a negative temperature coefficient of resistivity, attributed to highly localized carriers near the Fermi level as revealed through electronic structure analysis. Nanowire arrays were fabricated using porous anodized aluminum oxide (AAO) templates, and individual nanowires isolated after template dissolution and ultrasonic treatment. The easy-axis magnetization aligns with the nanowire growth direction, demonstrating significant perpendicular magnetic anisotropy.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"632 ","pages":"Article 173534"},"PeriodicalIF":3.0,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156462","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":"The effect of solid solution Dy element on Nd diffusivity in (Nd1−xDyx)2Fe14B phase: Insights from density functional theory","authors":"Y.P. Zheng,&nbsp;W. Zhai","doi":"10.1016/j.jmmm.2025.173529","DOIUrl":"10.1016/j.jmmm.2025.173529","url":null,"abstract":"<div><div>The effect of solid solution Dy element on Nd diffusivity in (Nd_{1−<em>x</em>}Dy_<em>x</em>)₂Fe₁₄B phase was investigated using a vacancy mediated self-diffusion coefficient calculation method on the basis of density functional theory. The thermodynamic calculation results revealed that Nd vacancy preferentially formed at 4<em>f</em> position, and the primary diffusion path of Nd atoms in (Nd_{1−<em>x</em>}Dy_<em>x</em>)₂Fe₁₄B phase was 4<em>g</em>→4<em>f</em>. As Dy concentration <em>x</em> increased from 0 to 0.25, Nd diffusion coefficient increased from 9.00 × 10⁻³⁷ to 2.64 × 10⁻²¹ cm²/s. Once the value of <em>x</em> rose to 0.375, Nd diffusivity abruptly decreased to 2.08 × 10⁻⁴² cm²/s and became even smaller than that in Nd₂Fe₁₄B phase. It was found that the Nd atomic volume and diffusion channel size characterized by coordination environment in (Nd_{1−<em>x</em>}Dy_<em>x</em>)₂Fe₁₄B phase synergistically affected Nd diffusivity. The size matching degree between the two factors in the diffusion process, which is represented by the coordination environment distortion degree between initial and transition states, was the underlying physical reason influencing the Nd diffusivity. The largest Nd diffusivity in (Nd_0.75Dy_0.25)₂Fe₁₄B phase was ascribed to the smallest coordination environment distortion degree in the diffusion process. This work deepens the understanding of Nd diffusion mechanism in (Nd_{1−<em>x</em>}Dy_<em>x</em>)₂Fe₁₄B phase and provides significant theoretical guidance for regulating rare earth element diffusion and distribution in magnetic (Nd_{1−<em>x</em>}Dy_<em>x</em>)₂Fe₁₄B grains.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"632 ","pages":"Article 173529"},"PeriodicalIF":3.0,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156466","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":"Kerr effect in (1 + 2)-dimensional graphene wormhole with axial magnetic field","authors":"K. Hasanirokh ,&nbsp;A. Naifar","doi":"10.1016/j.jmmm.2025.173518","DOIUrl":"10.1016/j.jmmm.2025.173518","url":null,"abstract":"<div><div>We investigate the effects of the magnetic field, relaxation time, wormhole radius, and curvature radius on the Kerr effect in a (1 + 2)-dimensional graphene wormhole. By applying an external magnetic field along the wormhole's axis, we formulate and analytically solve the Dirac equation under constant magnetic flux. For the scenario of a constant magnetic field, we derive the quantized energy levels and corresponding eigenstates. The numerical results show that the orbital angular momentum (OAM), radius of curvature and wormhole coordinate can effectively control the linear Kerr effect by modifying electronic states, affecting interference patterns, altering the electronic band structure, introducing effective gauge fields, increasing interaction volumes and tuning potential landscapes. These mechanisms collectively allow for a tunable and responsive Kerr effect in the material.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"632 ","pages":"Article 173518"},"PeriodicalIF":3.0,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156458","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 oxygen pressure during synthesis on the elemental composition, crystal structure, and ferromagnetic resonance spectra of NiFe2O4+δ crystals","authors":"Anton Matasov ,&nbsp;David Gabrielyan ,&nbsp;Maxim Sysoev ,&nbsp;Oleg Glaz ,&nbsp;Dmitry Volkov ,&nbsp;Kristina Samoylenko ,&nbsp;Kirill Kachurin ,&nbsp;Ansar Safin ,&nbsp;Sergey Nikitov","doi":"10.1016/j.jmmm.2025.173521","DOIUrl":"10.1016/j.jmmm.2025.173521","url":null,"abstract":"<div><div>The synthesis of NiFe₂O_4+δ crystals under varying oxygen pressures has been systematically investigated to understand their impact on elemental composition, crystal structure, and ferromagnetic resonance spectra. Using the optical floating zone melting technique, bulk single crystals were grown under oxygen pressures of 15, 20, and 30 MPa, followed by annealing in air to achieve different oxygen stoichiometries. X-ray diffraction analysis revealed a cubic crystal structure with lattice parameters influenced by oxygen intercalation, while energy-dispersive X-ray spectroscopy confirmed variations in Fe/Ni ratios, indicating the presence of excess oxygen. Ferromagnetic resonance (FMR) spectra showed tunable resonance frequencies between 5 and 15 GHz under applied magnetic fields, with optimal properties observed for samples synthesized at 15 MPa and annealed for 24 h. These samples exhibited the narrowest FMR linewidth (295 Oe) and the highest absorption intensity, making them promising candidates for spintronic applications such as filters and detectors.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"632 ","pages":"Article 173521"},"PeriodicalIF":3.0,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110116","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":"Tunable magnetism and electronic properties in 3D transition metal-doped blue phosphorene via charged defect engineering","authors":"Rongrong Ma ,&nbsp;Shiqi Guo ,&nbsp;Xiaoxiao Zhang ,&nbsp;Mei Ge ,&nbsp;Junfeng Zhang ,&nbsp;Jiang-Jiang Ma","doi":"10.1016/j.jmmm.2025.173520","DOIUrl":"10.1016/j.jmmm.2025.173520","url":null,"abstract":"<div><div>Blue phosphorene (BP), a novel two-dimensional material, has garnered considerable attention owing to its distinct atomic configuration, intriguing electronic characteristics, and high carrier mobility. However, its inherent non-magnetic character restricts its applicability in spintronics. To overcome this limitation and induce magnetism, we propose the strategic incorporation of 3d transition metal (TM) atoms (from Sc to Zn) via substitutional doping under various charged states. Using first-principles density functional theory, we systematically assess the structural stability, electronic structure, and magnetic characteristics of 3d TM-doped BP under various charge states. Our findings indicate that Sc substitution is most thermodynamically favorable in the neutral lattice, and its 1+ charge state exhibits magnetism. The Mn doping system consistently exhibits substantial magnetic moments and significant magnetic anisotropy across all charged states. Across all dopants, defect states introduced near the band edges modulate BP’s bandgap, and changes in electron occupation directly correlate with variations in local magnetic moments. These results deepen our understanding of charged defect physics mechanism in two-dimensional materials and offer practical guidance for defect-engineering strategies aimed at spintronic and nano-electronic applications.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"632 ","pages":"Article 173520"},"PeriodicalIF":3.0,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156463","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":"Electronic, magnetic, and mechanical properties of co-doped GaSb: A promising diluted magnetic semiconductor","authors":"Ramnath Samant ,&nbsp;Deepashri Saraf ,&nbsp;Rajendra P. Adhikari ,&nbsp;Omkar Shilkar ,&nbsp;Sakshit Raikar ,&nbsp;Allan Silveira ,&nbsp;Manthan Sawant ,&nbsp;Subrahmanyam Sappati ,&nbsp;Niharika Joshi ,&nbsp;Ashish M. Desai","doi":"10.1016/j.jmmm.2025.173499","DOIUrl":"10.1016/j.jmmm.2025.173499","url":null,"abstract":"<div><div>Understanding the interplay between magnetism and the electronic structure is crucial for the development of novel spintronic materials. This study employs density functional theory (DFT) calculations to investigate these properties in cubic Gallium Antimonide (GaSb) doped with Cobalt (Co) (Ga<span><math><msub><mrow></mrow><mrow><mn>1</mn><mo>−</mo><mi>x</mi></mrow></msub></math></span>Co<span><math><msub><mrow></mrow><mrow><mi>x</mi></mrow></msub></math></span>Sb, <span><math><mi>x</mi></math></span>=0.03125, 0.0625). Pristine GaSb is a non-magnetic semiconductor, but Co-doping induces magnetization even at low concentrations. Analysis of the density of states (DOS) suggests that p-d hybridization between Sb and Co is responsible for the observed magnetism. From the spin-polarized band structure calculations, we infer that the Co-doped GaSb compound exhibits half-metallic behavior at both concentrations. Furthermore, the mechanical properties of the compounds were studied to determine the bulk moduli, shear moduli, elastic constants, and Poisson’s ratios of the Co-doped GaSb. The calculated bulk modulus indicates that the material’s structural integrity remains unaffected under compressive stresses. Additionally, following the Born-Huang criteria for mechanical stability, the Co-doped GaSb compound was found to be mechanically stable. The values of Poisson’s ratio are indicative of the material’s resistance to shear deformation, further confirming its mechanical stability. These findings highlight the potential of Co-doped GaSb compounds as diluted magnetic semiconductors (DMS) for spintronics applications.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"632 ","pages":"Article 173499"},"PeriodicalIF":3.0,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156461","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}