Study of magnetic and magnetocaloric properties of polycrystalline Pr0.6Ca0.4MnO3 compound

IF 2.5 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials Pub Date : 2025-05-22 DOI:10.1016/j.jmmm.2025.173163

Kalipada Das , Amanulla Karikar , Dipak Mazumdar , I. Das

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引用次数: 0

Abstract

The magnetic and magnetocaloric properties of chemically single-phase polycrystalline Pr_0.6Ca_0.4MnO

_{3}

compound have been systematically investigated. The compound exhibits a sequence of complex magnetic transitions with decreasing temperature, including charge ordering phenomenon around

T_{C O} \sim 240

K and antiferromagnetic ordering at

T \sim 170

K. At lower temperatures, a canted antiferromagnetic state emerges (

T < 50

K), significantly influencing the magnetocaloric response. The instability of the antiferromagnetic phase and the nucleation of ferromagnetic regions make the magnetic state highly sensitive to external perturbations, particularly in the low-temperature regime. Furthermore, an anomalous behavior in the metamagnetic transition field has been observed at low temperatures, highlighting the intricate nature of the magnetic interactions in this system.

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多晶Pr0.6Ca0.4MnO3化合物的磁性和磁热性研究

系统地研究了化学单相多晶Pr0.6Ca0.4MnO3化合物的磁性和磁热性。随着温度的降低，化合物表现出一系列复杂的磁跃迁，包括TCO ~ 240 K附近的电荷有序现象和T ~ 170 K的反铁磁有序现象。在较低温度下，出现倾斜的反铁磁态（T<50 K），显著影响磁热响应。反铁磁相的不稳定性和铁磁区域的成核使磁态对外部扰动高度敏感，特别是在低温状态下。此外，在低温下观察到超磁跃迁场的异常行为，突出了该系统中磁相互作用的复杂性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Magnetism and Magnetic Materials 物理-材料科学：综合

CiteScore

5.30

自引率

11.10%

发文量

1149

审稿时长

59 days

期刊介绍： The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public. Main Categories: Full-length articles: Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged. In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications. The sub-section on Nanomagnetism contains articles on magnetic nanoparticles, nanowires, thin films, 2D materials and other nanoscale magnetic materials and their applications. The sub-section on Spintronics contains articles on magnetoresistance, magnetoimpedance, magneto-optical phenomena, Micro-Electro-Mechanical Systems (MEMS), and other topics related to spin current control and magneto-transport phenomena. The sub-section on Applications display papers that focus on applications of magnetic materials. The applications need to show a connection to magnetism. Review articles: Review articles organize, clarify, and summarize existing major works in the areas covered by the Journal and provide comprehensive citations to the full spectrum of relevant literature.