Synthesis, nuclear structure, and magnetic properties of LaCr<sub>1−ysub>Mn<sub>ysub>O<sub>3sub> (y = 0, 0.1, 0.2, and 0.3)

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• 作者：M. Tseggai ; P. Nordblad ; R. Tellgren ; H. Rundlö ; f ; G. Andr&#xe8 ; F. Bour&#xe8 ; e
• 关键词：LaCrO<sub>3sub> ; Manganese substitution ; Neutron powder diffraction ; Magnetic structure ; Magnetic moment ; Antiferromagnetism ; SQUID
• 刊名：Journal of Alloys and Compounds
• 出版年：2008
• 期刊代码：45_09258388
• 类别：ms
• 出版时间：12 June 2008
• 卷：457
• 期：1-2
• 页码：532-540
• 文件大小：859 K

摘要

The nuclear structure and magnetic properties of perovskite-type samples of compositions LaCr<sub>1−ysub>Mn<sub>ysub>O<sub>3sub> (y = 0, 0.1, 0.2, 0.3) have been studied using neutron powder diffraction technique and magnetization measurements. All samples have orthorhombic structure with space group Pnma (No. 62) in the temperature range 1.5–400 K. The pure lanthanum chromate LaCrO<sub>3sub> is a G-type antiferromagnet with a N&#xe9;el temperature of 290 K. The Mn substituted samples also order antiferromagnetically at about 290 K, with canted magnetic moments yielding a ferromagnetic component.