Phase relationship of the TbO_1.81-Mn₃O₄-Fe₂O₃ system synthesized at 1200 ¡ãC

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• 作者：Rong Wang^b ; Chengxu Yang^a ; Min Fan^b ; Meimei Wu^c ; Chunhai Wang^d ; Xiaohui Yu^e ; Jinlong Zhu^e ; Junrong Zhang^f ; Guobao Li^a ; ^{liguobao@pku.edu.cn} ; Qingzhen Huang^g ; ^{qing.huang@nist.gov} ; Dongfeng Chen^c ; Tounan Jin^b ; ^{tnjinkim@bjut.edu.cn} ; Takashi Kamiyama^f ; Fuhui Liao^a ; Jianhua Lin^a ; ^{jhlin@pku.edu.cn}
• 关键词：TbMnO3 ; Phase diagram ; Solid-state reaction ; Multiferroic ; Powder X-ray diffraction
• 刊名：Journal of Alloys and Compounds
• 出版年：2013
• 出版时间：25 March, 2013
• 年：2013
• 卷：554
• 期：Complete
• 页码：385-394
• 全文大小：2194 K

文摘

The phase relationship of the TbO_1.81-Mn₃O₄-Fe₂O₃ pseudo-ternary system synthesized at 1200 ¡ãC was determined using X-ray and neutron diffraction method. Four solid solutions, Mn_3?3xFe_3xO₄ (0.00 ? x ? 0.278), Mn_3?3xFe_3xO₄ (0.291 ? x ? 0.667), Mn_2?2xFe_2xO₃ (0.89 ? x ? 1.00), and (Tb_1?yMn_zFe_x)(Fe_wMn_1?w)O₃ (1?y + x + z ? 1, 0.00 ? w ? 1.00) were found along with six two-phase regions and three three-phase regions. The boundaries were determined by several different methods such as phase disappearing, the Vigard¡¯s law, and the lever rule.