Synthesis, characterization and low field magnetotransport of Nd_0.6Sr_0.4MnO₃/CrO₃ composite

详细信息    查看全文

• 作者：A. M. Ahmed ; H. F. Mohamed ; A. K. Diab ; Sara A. Mohamed
• 关键词：Composite material ; Electron microscopy ; Electrical characterization ; Magnetometer ; Rietveld analysis
• 刊名：Indian Journal of Physics
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：91
• 期：2
• 页码：169-181
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics, general; Astrophysics and Astroparticles;
• 出版者：Springer India
• ISSN：0974-9845
• 卷排序：91

文摘

(Nd_0.6Sr_0.4MnO₃)_1−x/(CrO₃)_x with x = 0.0–0.030 step 0.005 weight% composites have been prepared by the solid state reaction process. The X-ray and scanning electron microscopic manifest that all composites are a single orthorhombic phase and there are no CrO₃ grains separated from NdSrMnO matrix. The electrical measurements have revealed an increase of resistivity and a decrease of metal semiconductor transition with increasing CrO₃. The composite x = 0.025 has largest magnetoresistance nearly one hundred percent at room temperature.