合成方法对 La0.7Ca0.2Ba0.1MnO3 结构和磁性能的影响

IF 0.7 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

International Journal of Materials Research Pub Date : 2024-03-20 DOI:10.1515/ijmr-2022-0446

Valeria Nastar-Córdoba, Alejandra I. Guerrero, Claudia Villaquiran-Raigoza, Alfonso Ramírez, Liliana Tirado, Sonia Gaona-Jurado

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引用次数: 0

摘要

我们研究了合成方法对 La0.7Ca0.2Ba0.1Mn03 结构和磁性能的影响。通过 X 射线衍射和扫描电子显微镜研究了晶体结构，结果表明这两种方法都能生成 La0.7Ca0.2Ba0.1Mn03 单相样品。通过磁化测量，观察到铁磁性向顺磁性的二阶相变。通过共沉淀法获得的样品的居里温度为 272 K，通过溶液燃烧法获得的样品的居里温度为 283 K。两种样品都存在较小的磁滞现象。利用现象学模型获得了磁致参数；燃烧合成的样品的磁熵变化和相对冷却功率因数较高。

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Effect of synthesis method on structural and magnetic properties of La0.7Ca0.2Ba0.1MnO3

We study the effect of the synthesis method on the structural and magnetic properties of La0.7Ca0.2Ba0.1Mn03. The samples were synthesized by coprecipitation and solution combustion methods. X-ray diffraction and scanning electron microscopy were performed to investigate the crystallographic structure, showing that both methods produced La0.7Ca0.2Ba0.1Mn03 monophasic samples. From magnetization measurements a second-order, ferromagnetic to paramagnetic, phase transition was observed. The Curie temperature is found to be 272 K for the sample obtained by coprecipitation and 283 K for the sample obtained by solution combustion. There is a small magnetic hysteresis for both samples. The magnetocaloric parameters were obtained using a phenomenological model; the magnetic entropy change and relative cooling power factor are higher in the sample synthesized by combustion.

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来源期刊

International Journal of Materials Research 工程技术-冶金工程

CiteScore

1.30

自引率

12.50%

发文量

119

审稿时长

6.4 months

期刊介绍： The International Journal of Materials Research (IJMR) publishes original high quality experimental and theoretical papers and reviews on basic and applied research in the field of materials science and engineering, with focus on synthesis, processing, constitution, and properties of all classes of materials. Particular emphasis is placed on microstructural design, phase relations, computational thermodynamics, and kinetics at the nano to macro scale. Contributions may also focus on progress in advanced characterization techniques. All articles are subject to thorough, independent peer review.