Improvement of Magnetocaloric Effects and Study of Magneto-Transport Behavior of Lanthanum Strontium Manganites by Grain Boundary Management via Additives

被引：0
作者：
K. Swetha
S. Bharadwaj
Kirana Kommuri
R. Venkatesh
J. Arout Chelvane
K. V. Siva Kumar
Y. Kalyana Lakshmi
机构：
[1] University College of Science,Department of Physics
[2] Osmania University,Department of Physics, School of Science
[3] GITAM (Deemed to Be University),UGC–DAE Consortium for Scientific Research
[4] University Campus,Ceramic Composite Materials Laboratory, Department of Physics
[5] Defence Metallurgical Research Laboratory,undefined
[6] Sri Krishnadevaraya University,undefined
来源：
Journal of Electronic Materials | 2023年 / 52卷
关键词：
Manganites; magnetoresistance; magnetic property; electrical transport;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The structural, transport and magnetic properties of La0.67Sr0.33MnO3 with additives of ZrO2 and Bi2O3 were investigated and the results are presented. The studied samples showed a ferromagnetic-to-paramagnetic phase transition around 383 K, and a sharp transition was observed for the La0.67Sr0.33MnO3/Bi2O3 sample. A soft ferromagnetic behavior at room temperature was observed in all the La0.67Sr0.33MnO3 samples: however, the sample with bismuth oxide additive exhibited higher saturation magnetization and an enhanced magnetocaloric effect. In addition to a metal–insulator transition, a broad peak was observed in the ferromagnetic metallic region due to inhomogeneities arising from the antiferromagnetic interactions in the samples, and this disappeared with the application of a magnetic field. Positive magnetoresistance was observed for ZrO2 added to La0.67Sr0.33MnO3 for temperatures greater than 200 K.
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页码：8250 / 8262
页数：12
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