Induction and control of room-temperature ferromagnetism in dilute Fe-doped SrTiO3 ceramics

被引：30
|
作者：
He, Ju [1 ,2 ]
Lu, Xiaomei [1 ,3 ]
Zhu, Weili [1 ]
Hou, Yanyan [1 ]
Ti, Ruixia [1 ]
Huang, Fengzhen [1 ,3 ]
Lu, Xueliang [1 ]
Xu, TingTing [1 ]
Su, Jie [4 ]
Zhu, Jinsong [1 ]
机构：
[1] Nanjing Univ, Sch Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
[2] Huangshan Univ, Sch Informat Engn, Huangshan 245041, Peoples R China
[3] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China
[4] Qingdao Univ, Coll Phys Sci, Qingdao 266071, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 01期
基金：
中国国家自然科学基金;
关键词：
CR;
D O I：
10.1063/1.4926613
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The magnetic characteristics of dilute Fe-doped SrTiO3 ceramics are studied. The room-temperature ferromagnetism (with transition temperature around 650 K) is successfully realized in Sr0.98Ti0.9Fe0.1O3-delta and Sr0.98Ti0.92Fe0.1O3-delta ceramics. It is found that a fine-tuning of the components could alter the substitution sites of Fe ions and in-turn modulates the magnetism of the material. A systematic analysis reveals that the co-substitution of Fe ions at nonequivalent A and B sites in ABO(3) type perovskites is in favor of the ferromagnetism, which could be attributed to the mixed-valence-states of Fe ions and the variation of exchange interactions. This work provides an innovation for the induction and control of ferromagnetism in dilute magnetic materials. (C) 2015 AIP Publishing LLC.
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页数：5
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