Journal of Magnetism and Magnetic Materials最新文献_第6页

Magnetoimpedance properties of CoNbZr, multilayer CoNbZr/Au and multilayer NiFe/Au thin films CoNbZr、多层CoNbZr/Au和多层NiFe/Au薄膜的磁阻抗特性

IF 3 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials

Pub Date : 2025-11-20 DOI: 10.1016/j.jmmm.2025.173681

Indujan Sivanesarajah , Leon Abelmann , Uwe Hartmann

Thin-film giant magnetoimpedance (GMI) structures are promising candidates for high-frequency magnetic sensing, with their performance governed by the interplay of electronic transport, magnetic softness, and ferromagnetic resonance (FMR). Optimisation therefore requires a comprehensive understanding of the properties of soft magnetic materials. This study investigates the structural, electric, magnetic, and GMI properties of sputtered amorphous CoNbZr single layers, amorphous CoNbZr/Au multilayers, and crystalline NiFe/Au multilayers. GMI measurements reveal distinct FMR frequencies of 1.4 GHz (CoNbZr), 0.7 GHz (CoNbZr/Au), and 0.5 GHz (NiFe/Au). Introducing Au interlayers into CoNbZr lowers the FMR frequency by 50% and enhances the maximum GMI ratio by a comparable margin relative to the single-layer film. At 1.8 GHz, the highest GMI performance is observed in a

20 μ m \times 5000 μ m

CoNbZr/Au strip, yielding 300% with a sensitivity of 249%/kAm

^{- 1}

. Under identical conditions, single-layer CoNbZr reaches 180% (169%/kAm

^{- 1}

) and NiFe/Au 280% (183%/kAm

^{- 1}

), confirming the superior response of the CoNbZr/Au multilayer. These improvements are attributed to differences in in-plane demagnetising factors and saturation magnetisations, providing design guidelines for the development of resonant GHz-range GMI sensors.

薄膜巨磁阻抗（GMI）结构是高频磁传感的理想候选材料，其性能受电子输运、磁柔软度和铁磁共振（FMR）的相互作用支配。因此，优化需要对软磁材料的特性有全面的了解。研究了溅射非晶态CoNbZr单层、非晶态CoNbZr/Au多层和NiFe/Au多层的结构、电、磁和GMI性能。GMI测量显示不同的FMR频率为1.4 GHz (CoNbZr), 0.7 GHz （CoNbZr/Au）和0.5 GHz （NiFe/Au）。与单层膜相比，在CoNbZr中引入Au中间层可以降低50%的FMR频率，并提高最大GMI比率。在1.8 GHz时，在20μm×5000μm CoNbZr/Au带中观察到最高的GMI性能，收率为300%，灵敏度为249%/kAm−1。在相同的条件下，单层CoNbZr达到180% (169%/kAm−1)，NiFe/Au达到280% (183%/kAm−1)，证实了多层CoNbZr/Au的优越响应。这些改进归因于面内消磁因子和饱和磁化的差异，为谐振ghz范围GMI传感器的开发提供了设计指南。

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引用次数: 0

Intrinsic coexistence of ferromagnetic and antiferromagnetic phases in MnSb2Te4 topological layers MnSb2Te4拓扑层中铁磁相和反铁磁相的内在共存

IF 3 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials

Pub Date : 2025-11-20 DOI: 10.1016/j.jmmm.2025.173696

Ankush Saxena , Shiu-Ming Huang , Navneet Kumar Karn , Manish Mani Sharma , Kamal , Che-Min Lin , Mitch Chou , Veer Pal Singh Awana

In this study, we investigated the transport and magnetic behavior of MnSb₂Te₄, a magnetic topological insulator and structural analogue of MnBi₂Te₄. Single crystals of MnSb₂Te₄ were successfully synthesized using a solid-state reaction method. Structural characterization via X-ray diffraction and scanning electron microscopy confirms the phase purity and well-defined crystallinity of the samples. To further probe the lattice dynamics and chemical states, Raman spectroscopy and X-ray photoelectron spectroscopy were employed, revealing distinct vibrational modes and valence states of the constituent elements. Magnetization measurements uncover two distinct magnetic transitions, which are corroborated by temperature-dependent electrical transport data. The resistivity (ρ–T) profile suggests the presence of magnetic polarons, indicative of strong coupling between charge carriers and local magnetic moments. At low temperatures (T < 40 K), magnetoresistance (MR) measurements exhibit hysteresis as a function of magnetic field, pointing to the coexistence of ferromagnetic and antiferromagnetic phases. With increasing temperature, negative MR becomes prominent above the magnetic ordering point due to polaron formation. To gain deeper insight into the electronic structure, density functional theory (DFT) calculations were performed. These reveal a competition between ferromagnetic and antiferromagnetic interactions, underscoring the complex magnetic landscape of MnSb₂Te₄. Overall, our findings highlight MnSb₂Te₄ as a compelling system that hosts coexisting magnetic phases intertwined with topological characteristics, warranting further exploration of its magneto-topological coupling.

在这项研究中，我们研究了磁性拓扑绝缘体MnSb2Te4和MnBi2Te4结构类似物的输运和磁性行为。采用固相反应法制备了MnSb2Te4单晶。通过x射线衍射和扫描电子显微镜的结构表征证实了样品的相纯度和明确的结晶度。为了进一步探索晶格动力学和化学态，利用拉曼光谱和x射线光电子能谱，揭示了组成元素的不同振动模式和价态。磁化测量揭示了两种不同的磁跃迁，这是由温度相关的电传输数据证实的。电阻率（ρ-T）曲线表明存在磁极化子，表明载流子与局部磁矩之间存在强耦合。在低温（T < 40 K）下，磁电阻（MR）测量表现出作为磁场函数的滞后，表明铁磁相和反铁磁相共存。随着温度的升高，极化子的形成使磁有序点以上的负磁阻变得明显。为了更深入地了解电子结构，进行了密度泛函理论（DFT）计算。这些揭示了铁磁和反铁磁相互作用之间的竞争，强调了MnSb2Te4的复杂磁性景观。总的来说，我们的研究结果强调了MnSb2Te4是一个令人信服的系统，它拥有与拓扑特征交织在一起的共存磁相，需要进一步探索其磁拓扑耦合。

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引用次数: 0

Magnetocaloric properties of Sb, Ge, and Ga doped AlFe2B2 Sb、Ge和Ga掺杂AlFe2B2的磁热特性

IF 3 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials

Pub Date : 2025-11-20 DOI: 10.1016/j.jmmm.2025.173693

R. Preyadarshini , S. Kavita , A. Kumar , D. Sivaprahasam

This study investigates the effects of Sb, Ge, and Ga doping in AlFe₂B₂ on magnetic and magneto-caloric properties. Samples of AlFe₂B₂ and AlFe_1.9M_0.1B₂ (M = Ge, Ga and Sb) with 20% excess Al were synthesized by arc melting, and the powders processed were investigated for their phase constituents, microstructure, magnetic properties and magneto-caloric effect. The parent compounds prepared showed the AlFe₂B₂ phase with a FeB secondary phase. However, in Sb and Ga-doped samples, an additional impurity phase, Al₁₃Fe₄, was observed apart from FeB, while in Ge-doped, only the AlB₂ impurity phase was present. The Curie temperature of AlFe₂B₂ is 277 K, increasing with Sb, Ge, and Ga doping to 287 K, 297 K, and 296 K, respectively. The magnetization (M) is also higher with Ge and Ga addition in the 100-300 K range; however, with Sb doping, the M decreases significantly compared to parent AlFe₂B₂. The magnetic entropy change under 2 T reached 2.31 JKg⁻¹ K⁻¹ near 274 K in AlFe₂B₂, which decreases to 2.55 JKg⁻¹ K⁻¹ and 1.92 JKg⁻¹ K⁻¹ with Ge and Ga, respectively. With Sb doping, the MC change was affected dramatically to 0.31 JKg⁻¹ K⁻¹. However, the relative cooling power of Ge doped is the same as that of parent AlFe₂B₂. This research advances the understanding of the relationship between doping elements and magnetic properties in AlFe₂B₂ and opens pathways for designing magneto-caloric materials with tailored magnetic characteristics.

本文研究了Sb、Ge和Ga对AlFe2B2材料磁性和磁热性能的影响。采用电弧熔炼法制备了Al含量超过20%的AlFe2B2和AlFe1.9M0.1B2 （M = Ge， Ga和Sb）粉末，并对其相组成、微观结构、磁性能和磁热效应进行了研究。制备的母体化合物为AlFe2B2相和FeB次级相。然而，在Sb和ga掺杂的样品中，除了FeB之外，还观察到额外的杂质相Al13Fe4，而在ge掺杂的样品中，只有AlB2杂质相存在。AlFe2B2的居里温度为277 K，随着Sb、Ge和Ga的掺杂，居里温度分别升高到287 K、297 K和296 K。在100-300 K范围内，加入Ge和Ga，磁化强度(M)也较高；与母体AlFe2B2相比，掺入Sb后，M明显降低。在2t条件下，AlFe2B2在274k附近的磁熵变化达到2.31 JKg−1 K−1，在Ge和Ga条件下分别降低到2.55 JKg−1 K−1和1.92 JKg−1 K−1。掺杂Sb后，MC变化显著，达到0.31 JKg−1 K−1。而掺Ge的相对冷却功率与母体AlFe2B2相同。该研究促进了对掺杂元素与AlFe2B2中磁性之间关系的理解，并为设计具有定制磁性特性的磁热材料开辟了途径。

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引用次数: 0

Electronic structures and magnetic properties of Janus YClBr monolayer controlled by carrier doping 载流子掺杂控制Janus YClBr单层的电子结构和磁性能

IF 3 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials

Pub Date : 2025-11-20 DOI: 10.1016/j.jmmm.2025.173689

Ai-Ling Ma , Jun-Kang Jiang , Cui-E Hu , Hua-Yun Geng , Xiang-Rong Chen

Two-dimensional (2D) ferrovalley materials, characterized by spontaneous spin and valley polarizations, have garnered considerable research interest due to their promising applications in spintronics. In this work, using first-principles calculations and Monte Carlo simulations, we demonstrate that the Janus YClBr monolayer is a ferrovalley semiconductor with a high Curie temperature and intrinsic valley polarization. Carrier doping can induce a semiconductor-to-half-metal transition, achieving 100 % spin polarization. The intrinsic Curie temperature reaches 252 K and can be enhanced to 457 K when hole doping reaches 6.37 × 10¹³ cm⁻² (0.08 holes per atom), surpassing the room-temperature threshold. Even minimal doping triggers a reversible transition of the easy magnetization axis from in-plane to out-of-plane. With out-of-plane mirror symmetry broken, we explored the variations in layer charge under an external electric field. Moreover, the interplay between external and built-in electric fields imparts a distinctive charge transfer behavior to this layer. The coercive force derived from the hysteresis loop is 0.02 T, with minimal hysteresis loss, indicating its high responsiveness to external magnetic fields. These properties make this material an excellent candidate for room-temperature spintronic devices.

二维（2D）铁谷材料具有自发自旋和谷极化的特征，由于其在自旋电子学中的应用前景而获得了相当大的研究兴趣。在这项工作中，使用第一性原理计算和蒙特卡罗模拟，我们证明了Janus YClBr单层是具有高居里温度和本征谷极化的铁谷半导体。载流子掺杂可以诱导半导体到半金属的转变，实现100%的自旋极化。当空穴掺杂达到6.37 × 1013 cm−2（每原子0.08个空穴）时，本然居里温度达到252 K，超过室温阈值，可提高到457 K。即使是最小的掺杂也会触发易磁化轴从平面内到平面外的可逆转变。在面外镜像对称被打破的情况下，我们探索了外加电场作用下层电荷的变化。此外，外部和内置电场之间的相互作用赋予该层独特的电荷转移行为。磁滞回线产生的矫顽力为0.02 T，磁滞损耗极小，表明其对外部磁场的响应性高。这些特性使这种材料成为室温自旋电子器件的极好候选材料。

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引用次数: 0

Magnetoelastic response and strain-controlled magnetic order in TbFe₂: A first-principles study tfe2中的磁弹性响应和应变控制磁序：第一性原理研究

IF 3 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials

Pub Date : 2025-11-19 DOI: 10.1016/j.jmmm.2025.173688

H. Zaari , G. Dimitri Ngantso , H. Bouhani , A. El Kenz , A. Benyoussef

Understanding the interplay between magnetic and elastic properties in magnetostrictive materials is crucial for advancing technological applications such as sensors, actuators, and energy harvesting devices. TbFe₂, a rare-earth-based magnetostrictive compound, exhibits complex magnetoelastic coupling that remains partially unexplored. In this study, we investigate the electronic, elastic, and magnetoelastic properties of

{TbFe}_{2}

using density functional theory (DFT) within the generalized gradient approximation (GGA). We analyze the total and partial densities of states (DOS), determine elastic and magnetoelastic constants, and examine the effects of strain on the electronic and magnetic properties. Our findings reveal that Tb atoms play a dominant role in the compound's magnetism, with strain significantly influencing the magnetocrystalline anisotropy and magnetic moments. The calculated elastic and magnetoelastic constants confirm the structural stability of

{TbFe}_{2}

and highlight its strong magnetostrictive response. These results provide valuable insights into the fundamental mechanisms governing magnetoelasticity in

{TbFe}_{2}

, paving the way for its integration into advanced functional devices.

了解磁致伸缩材料的磁性和弹性之间的相互作用对于推进传感器、致动器和能量收集设备等技术应用至关重要。tfe 2是一种稀土基磁致伸缩化合物，具有部分未开发的复杂磁弹性耦合。在这项研究中，我们利用密度泛函理论（DFT）在广义梯度近似（GGA）中研究了TbFe2的电子、弹性和磁弹性性质。我们分析了态的总密度和偏密度，确定了弹性和磁弹性常数，并研究了应变对电子和磁性能的影响。我们的研究结果表明，Tb原子在化合物的磁性中起主导作用，应变显著影响磁晶各向异性和磁矩。计算得到的弹性和磁弹性常数证实了TbFe2的结构稳定性，并突出了其强磁致伸缩响应。这些结果为TbFe2中控制磁弹性的基本机制提供了有价值的见解，为其集成到先进的功能器件中铺平了道路。

{"title":"Magnetoelastic response and strain-controlled magnetic order in TbFe₂: A first-principles study","authors":"H. Zaari , G. Dimitri Ngantso , H. Bouhani , A. El Kenz , A. Benyoussef","doi":"10.1016/j.jmmm.2025.173688","DOIUrl":"10.1016/j.jmmm.2025.173688","url":null,"abstract":"<div><div>Understanding the interplay between magnetic and elastic properties in magnetostrictive materials is crucial for advancing technological applications such as sensors, actuators, and energy harvesting devices. TbFe₂, a rare-earth-based magnetostrictive compound, exhibits complex magnetoelastic coupling that remains partially unexplored. In this study, we investigate the electronic, elastic, and magnetoelastic properties of <span><math><msub><mi>TbFe</mi><mn>2</mn></msub></math></span> using density functional theory (DFT) within the generalized gradient approximation (GGA). We analyze the total and partial densities of states (DOS), determine elastic and magnetoelastic constants, and examine the effects of strain on the electronic and magnetic properties. Our findings reveal that Tb atoms play a dominant role in the compound's magnetism, with strain significantly influencing the magnetocrystalline anisotropy and magnetic moments. The calculated elastic and magnetoelastic constants confirm the structural stability of <span><math><msub><mi>TbFe</mi><mn>2</mn></msub></math></span> and highlight its strong magnetostrictive response. These results provide valuable insights into the fundamental mechanisms governing magnetoelasticity in <span><math><msub><mi>TbFe</mi><mn>2</mn></msub></math></span>, paving the way for its integration into advanced functional devices.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"637 ","pages":"Article 173688"},"PeriodicalIF":3.0,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145578492","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

Secondary hot deformation to improve the magnetic performance of Pr80Ga10Cu10 grain boundary diffused hot-deformed NdFeB magnets 通过二次热变形提高Pr80Ga10Cu10晶界扩散热变形钕铁硼磁体的磁性能

IF 3 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials

Pub Date : 2025-11-19 DOI: 10.1016/j.jmmm.2025.173690

Kai-Wen Wu , Chuan-Xiao Peng , Zi-Long Wang , Yang Luo , Ning-Tao Quan , Jian-Hui Dong , Xiao-Feng Ji , Yuan-Fei Yang , Qin-Jia Wang , Yue Wang

To enhance the coercivity of hot-deformed magnets via grain boundary diffusion (GBD) while mitigating the detrimental impacts of grain orientation degradation and associated remanence loss, this study proposes a two-stage strategy. Initially, a ternary Pr₈₀Ga₁₀Cu₁₀ (at.%) diffusion source was utilized for GBD to elevate coercivity. Subsequently, a secondary hot deformation (SHD) process was implemented to optimize the crystallographic texture, thereby improving remanence. This approach successfully fabricated a hot-deformed magnet with outstanding comprehensive magnetic properties: a coercivity of 2.23 T, a remanence of 1.31 T, and a maximum energy product ((BH)_max) of 327.95 kJ/m³. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses revealed that SHD process effectively optimized the texture of hot-deformed magnets, thereby contributing to an improvement in remanence. Notably, although the width of the grain boundary phase decreased after SHD treatment, the distribution of rare-earth (RE) elements at the grain boundaries became more homogeneous. Furthermore, the presence of the Nd₆Fe₁₃Ga phase was identified at the triple junctions. This phase formation reduced the concentration of ferromagnetic phases at the grain boundaries, weakened the intergranular exchange coupling, and consequently maintained the high coercivity of the magnet.

为了通过晶界扩散（GBD）提高热变形磁体的矫顽力，同时减轻晶粒取向退化和相关剩余物损失的不利影响，本研究提出了两个阶段的策略。最初，使用三元Pr80Ga10Cu10 （at.%）扩散源来提高GBD的矫顽力。随后，采用二次热变形（SHD）工艺优化了晶体织构，从而改善了剩余物。该方法成功制备了具有优异综合磁性能的热变形磁体：矫顽力为2.23 T，剩余量为1.31 T，最大能积（BH）max为327.95 kJ/m3。扫描电镜（SEM）和透射电镜（TEM）分析表明，SHD工艺有效地优化了热变形磁体的织构，从而改善了剩余物。值得注意的是，虽然SHD处理后晶界相宽度减小，但晶界处稀土元素的分布更加均匀。此外，在三结处鉴定了Nd6Fe13Ga相的存在。这种相的形成降低了晶界处铁磁相的浓度，减弱了晶间交换耦合，从而保持了磁体的高矫顽力。

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引用次数: 0

How ferromagnetic plane drives magnetocrystalline anisotropy in antiferromagnetic CoO and FeO 铁磁平面如何驱动反铁磁CoO和FeO的磁晶各向异性

IF 3 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials

Pub Date : 2025-11-19 DOI: 10.1016/j.jmmm.2025.173691

Ilya V. Kashin , Alexander S. Iakovlev , Sergei N. Andreev

In this study we present a theoretical investigation of the role that ferromagnetic plane (111) plays in the formation of magnetocrystalline anisotropy (MCA) effects in CoO and FeO monoxides. For this purpose, a first-principles calculations of the electronic structure are performed within the GGA

+ U

approach. Based on the low-energy model in the Wannier functions basis, the MCA energy angular profile and the isotropic exchange environment of the transition metal atom are estimated using

k

-dependent Green’s functions. We have revealed a clear regularity in the direction of the easy and hard axes in both systems as lying in the (111) plane or along [111]. While for CoO the easy/hard axis orientation is (111)/[111], for FeO it appears reversed and thus emphasizes the fundamental importance of (111) as the geometrical driver of the magnetism in the crystals. The identification of the contributions that individual sublattices make to the MCA energy allowed us to reveal the decisive role of the electron hopping mechanisms in easy axis orientation. Considering the MCA and exchange environment with orbital decomposition in CoO and FeO under homogeneous strain in the (111) plane and along [111] showed a direct interrelation between the ferro- and antiferromagnetic contributions to the exchange environment and the energetic stability of the easy axis.

在这项研究中，我们提出了铁磁平面（111）在CoO和FeO氧化物磁晶各向异性（MCA）效应形成中的作用的理论研究。为此，在GGA+U方法中进行了电子结构的第一性原理计算。基于万尼尔函数基础上的低能模型，利用依赖k的格林函数估计了过渡金属原子的MCA能量角分布和各向同性交换环境。我们已经揭示了两个系统的易轴和硬轴在（111）平面或沿[111]方向上的明显规律性。CoO的易/硬轴方向为(111)/[111]，而FeO的易/硬轴方向则相反，因此强调了（111）作为晶体中磁性的几何驱动因素的基本重要性。单个亚晶格对MCA能量的贡献的确定使我们揭示了电子跳跃机制在易轴取向中的决定性作用。考虑在（111）平面和[111]上均匀应变下CoO和FeO中轨道分解的MCA和交换环境，表明铁磁和反铁磁对交换环境和易轴能量稳定性的贡献之间存在直接的相互关系。

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引用次数: 0

Letter to the Editor: Velocity-slip boundary conditions and shape factor effects on MHD hybrid nanofluid flow via converging/diverging channels 给编辑的信：速度-滑移边界条件和形状因子对MHD混合纳米流体通过收敛/发散通道流动的影响

IF 3 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials

Pub Date : 2025-11-19 DOI: 10.1016/j.jmmm.2025.173686

Christopher C. Tisdell

Recently, Kezzer et al. (2023) analyzed a two-point boundary value problem arising from the velocity field of a MHD hybrid nanofluid flow. There are several anomolies in their work that I would like to correct.

最近，Kezzer等人（2023）分析了MHD混合纳米流体流动速度场中出现的两点边值问题。他们的工作中有几个反常之处我想加以纠正。

引用次数: 0

Magnetocaloric effects and dynamic magnetic behavior in a mixed spin Ising model on a two-dimensional decorated triangular Husimi lattice 二维装饰三角形胡司米晶格上混合自旋Ising模型的磁热效应和动态磁行为

IF 3 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials

Pub Date : 2025-11-19 DOI: 10.1016/j.jmmm.2025.173679

Xue-Jiao Wang , Wei Jiang , Nan Si

This study utilizes a effective field theory with correlations theory to explore the dynamic magnetic behavior and magnetocaloric effects of a two-dimensional decorated triangular husimi lattice. The lattice is composed of magnetic atoms with spin values of 3/2 and 1. The results indicate that variations in the exchange coupling |J| influence the system's saturation order parameter. Under specific parameter conditions, the magnetization susceptibility curve exhibits a double peak. A compensation phenomenon is also observed. The bias field (h_b) and the oscillating field (h_o) have opposite effects on the system's phase transition temperature. The study further examines the impact of various parameters on the magnetization, magnetic entropy change, relative cooling power (RCP), temperature-averaged entropy change (TEC), and normalized refrigerant capacity (NRC) of a ferromagnetic system. The findings demonstrate that strong exchange coupling reduces the material's RCP, TEC, and NRC. In contrast, a strong magnetic field enhances RCP and TEC while reducing NRC. These insights significantly deepen our understanding of magnetocaloric effects in two-dimensional materials. They also highlight their potential in developing more efficient and versatile magnetic devices.

本文利用有效场论和相关理论探讨了二维装饰三角形胡西米晶格的动态磁性行为和磁热效应。晶格由自旋值为3/2和1的磁性原子组成。结果表明，交换耦合|J|的变化会影响系统的饱和阶数参数。在特定参数条件下，磁化率曲线呈现双峰。还观察到补偿现象。偏置场（hb）和振荡场（ho）对体系相变温度的影响相反。该研究进一步考察了各种参数对铁磁系统的磁化强度、磁熵变化、相对冷却功率（RCP）、平均温度熵变化（TEC）和归一化制冷剂容量（NRC）的影响。研究结果表明，强交换耦合降低了材料的RCP、TEC和NRC。强磁场增强了RCP和TEC，降低了NRC。这些见解大大加深了我们对二维材料中磁热效应的理解。他们还强调了他们在开发更高效和通用的磁性设备方面的潜力。

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引用次数: 0

Corrigendum to “Manipulating spin structure and switching in two-dimensional non-collinear antiferromagnets via Dzyaloshinskii-Moriya interaction” [J. Magn. Magn. Mater. 634 (2025) 173514] “利用Dzyaloshinskii-Moriya相互作用操纵二维非共线反铁磁体的自旋结构和开关”[J]。粉剂。粉剂。Mater. 634 (2025) 173514]

IF 3 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials

Pub Date : 2025-11-18 DOI: 10.1016/j.jmmm.2025.173657

Feng Liu, Yu Tang, Yue Pan, Zhong Shi, Xuepeng Qiu, S.M. Zhou, Weijia Fan

引用次数: 0