A2FeCrO6 (A = La和Sm)双钙钛矿的微观结构表征和磁性能

IF 2.8 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Surendra Kumar Sajan, Samrat Mukherjee
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引用次数: 0

摘要

采用常规固相反应法制备了A2FeCrO6 (A = La & Sm)双钙钛矿。本研究提供了La2FeCrO6在室温下的非顺磁性行为,并首次报道了Sm2FeCrO6双钙钛矿的合成和表征。通过粉末x射线衍射的Rietveld细化,证实了双钙钛矿的晶体结构为单斜晶(P21/n),平均晶粒尺寸为55 nm和72 nm。拉曼光谱模式进一步支持了XRD结果。Sm基样品的零场冷却(ZFC)和场冷却(FC)曲线在250 K以下发散,而La基样品的零场冷却(FC)曲线在室温附近发散。在5k和300 K下,la基样品表现出反铁磁性,而sm基样品在300 K下表现出顺磁性,在5 K下表现出反铁磁性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Microstructural characterization and magnetic properties of A2FeCrO6 (A = La and Sm) double perovskites

The A2FeCrO6 (A = La & Sm) double perovskites were synthesized using conventional solid-state reaction method. This work provides non paramagnetic behaviour of La2FeCrO6 at room temperature and the first report on the synthesis and characterization of the Sm2FeCrO6 double perovskite. From Rietveld refinement of the powder X-ray diffraction, the crystal structure of the double perovskite was confirmed to be monoclinic (P21/n), with an average crystallite size of 55 nm and 72 nm. XRD results were further supported by Raman spectroscopic modes. The zero field cooled (ZFC) and field cooled (FC) curves diverged below 250 K temperature for Sm based sample and near the room temperature for La based sample. The La-based sample exhibited ferromagnetic behavior with anti-ferromagnetic component at 5 K and 300 K, while the Sm-based sample showed paramagnetism at 300 K and antiferromagnetism at 5 K.

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来源期刊
Applied Physics A
Applied Physics A 工程技术-材料科学:综合
CiteScore
4.80
自引率
7.40%
发文量
964
审稿时长
38 days
期刊介绍: Applied Physics A publishes experimental and theoretical investigations in applied physics as regular articles, rapid communications, and invited papers. The distinguished 30-member Board of Editors reflects the interdisciplinary approach of the journal and ensures the highest quality of peer review.
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