Magnetic phase diagram of the solid solution system

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• 作者：M. Mihalik jr.^a ; ^{matmihalik@saske.sk} ; M. Mihalik^a ; Z. Jagličić^b ; R. Vilarinho^c ; J. Agostinho Moreira^c ; E. Queiros^d ; P.B. Tavares^d ; A. Almeida^c ; M. Zentková ; ^a
• 关键词：Manganates ; Orthoferrites ; Doping ; Phase diagram
• 刊名：Physica B: Condensed Matter
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：506
• 期：Complete
• 页码：163-167
• 全文大小：696 K
• 卷排序：506

文摘

We present the magnetic phase diagram of TbMn1−xFexO3TbMn1−xFexO3 substitutional solid solutions in the whole concentration range 0≤x≤10≤x≤1 as determined from magnetization and specific-heat measurements and as supported by already known magnetic structures published on this substitutional system. We have found that the dominant magnetic ion in the concentration range 0≤x<0.20≤x<0.2 is Mn, while Fe ions do not create an independent magnetic structure, but strongly affect the magnetic properties of the parent compound by suppressing the magnetic-ordering temperature as well as the magnetic order-order transition to a cycloidal phase.The magnetism in the concentration range 0.2≤x≤10.2≤x≤1 is driven by the Fe sublattice. The Mn ions again do not order in a long-range magnetic ordered state, but stabilize five magnetic phases of the Fe sublattice above 2 K. Magnetic ordering of the Tb sublattice is observed at temperatures below 8.2 K over entire concentration range.