Diluted ferromagnetic semiconductor（LaCa）（ZnMn）SbO isostructural to “1111” type iron pnictide superconductors

We report discovery of ferromagnetism in（LaCa）（ZnMn）SbO isostructural to the well-studied iron-based superconductor LaFeAs（O1 xFx）. Spin is induced by partial substitution of Mn2＋for Zn2＋, while charge is induced by substitution of Ca2＋for La3＋within the parent compound LaZnSbO. Ferromagnetism with...

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Published in:中国科学：物理学、力学、天文学英文版 2013 (11), p.2026-2030
Main Author: HAN Wei ZHAO Kan WANG XianCheng LIU QingQing NING FanLong DENG Zheng LIU Ying ZHU JinLong DING Cui MAN HuiYuan JIN ChangQing
Format: Article
Language:English
Subjects:
反常霍尔效应
居里温度
稀释磁性半导体
结构
超导体
铁磁性
铁系
霍尔系数
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Summary:We report discovery of ferromagnetism in（LaCa）（ZnMn）SbO isostructural to the well-studied iron-based superconductor LaFeAs（O1 xFx）. Spin is induced by partial substitution of Mn2＋for Zn2＋, while charge is induced by substitution of Ca2＋for La3＋within the parent compound LaZnSbO. Ferromagnetism with Curie temperature（TC） is observed up to 40 K at the spin doping 0.15 by introducing Mn2＋into the Zn2＋sites for（La0.95Ca0.05）（Zn1 xMnx）SbO. The Hall coefficient measurement indicates p-type carrier for（La0.95Ca0.05）（Zn0.9Mn0.1）SbO with concentration of n~1020cm 3showing anomalous Hall effect below TC.
ISSN:1674-7348
1869-1927