Ferromagnetism at 230 K in (Ba0.7K0.3)(Zn0.85Mn0.15)2As2 diluted magnetic semiconductor

Kan Zhao; Bijuan Chen; Guoqiang Zhao; Zhen Yuan; Qingqing Liu; Zheng Deng; Jinlong Zhu; Changqing Jin

doi:10.1007/s11434-014-0398-z

Ferromagnetism at 230 K in (Ba_0.7K_0.3)(Zn_0.85Mn_0.15)₂As₂ diluted magnetic semiconductor

Kan Zhao
, Bijuan Chen
, Guoqiang Zhao
, Zhen Yuan
, Qingqing Liu
, Zheng Deng
, Jinlong Zhu
, Changqing Jin^*

^*Corresponding author for this work

CAS - Institute of Physics

Research output: Contribution to journal › Letter › peer-review

107 Scopus citations

Abstract

We report the ferromagnetism with Cure temperature T _c at 230 K in a new diluted magnetic semiconductor (DMS) (Ba_0.7K_0.3)(Zn_0.85Mn_0.15)₂As₂ isostructural to ferropnictide 122 superconductors synthesized via low temperature sintering. Spin is doped by isovalence substitution of Mn²⁺for Zn²⁺, while charge is introduced by heterovalence substitution of K¹⁺ for Ba²⁺ in (Ba_0.7K_0.3)(Zn_0.85Mn_0.15)₂As₂ DMS, being different from (Ga,Mn)As where both spin & charge are induced simultaneously by heterovalence substation of Mn²⁺ for Ga³⁺. The (Ba_0.7K_0.3)(Zn_0.85Mn_0.15)₂As₂ DMS shows spontaneous magnetization following T ^3/2 dependence expected for a homogeneous ferromagnet with saturation moment 1.0μ _B for each Mn atom_.

Original language	English
Pages (from-to)	2524-2527
Number of pages	4
Journal	Chinese Science Bulletin
Volume	59
Issue number	21
DOIs	https://doi.org/10.1007/s11434-014-0398-z
State	Published - Jun 2014
Externally published	Yes

Keywords

Decoupled spin charge doping
Diluted magnetic semiconductors
High Curie temperature

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10.1007/s11434-014-0398-z

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@article{c883fb03d124485d894035647535de43,

title = "Ferromagnetism at 230 K in (Ba0.7K0.3)(Zn0.85Mn0.15)2As2 diluted magnetic semiconductor",

abstract = "We report the ferromagnetism with Cure temperature T c at 230 K in a new diluted magnetic semiconductor (DMS) (Ba0.7K0.3)(Zn0.85Mn0.15)2As2 isostructural to ferropnictide 122 superconductors synthesized via low temperature sintering. Spin is doped by isovalence substitution of Mn2+for Zn2+, while charge is introduced by heterovalence substitution of K1+ for Ba2+ in (Ba0.7K0.3)(Zn0.85Mn0.15)2As2 DMS, being different from (Ga,Mn)As where both spin \& charge are induced simultaneously by heterovalence substation of Mn2+ for Ga3+. The (Ba0.7K0.3)(Zn0.85Mn0.15)2As2 DMS shows spontaneous magnetization following T 3/2 dependence expected for a homogeneous ferromagnet with saturation moment 1.0μ B for each Mn atom.",

keywords = "Decoupled spin charge doping, Diluted magnetic semiconductors, High Curie temperature",

author = "Kan Zhao and Bijuan Chen and Guoqiang Zhao and Zhen Yuan and Qingqing Liu and Zheng Deng and Jinlong Zhu and Changqing Jin",

year = "2014",

month = jun,

doi = "10.1007/s11434-014-0398-z",

language = "英语",

volume = "59",

pages = "2524--2527",

journal = "Chinese Science Bulletin",

issn = "1001-6538",

publisher = "Science Press ",

number = "21",

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TY - JOUR

T1 - Ferromagnetism at 230 K in (Ba0.7K0.3)(Zn0.85Mn0.15)2As2 diluted magnetic semiconductor

AU - Zhao, Kan

AU - Chen, Bijuan

AU - Zhao, Guoqiang

AU - Yuan, Zhen

AU - Liu, Qingqing

AU - Deng, Zheng

AU - Zhu, Jinlong

AU - Jin, Changqing

PY - 2014/6

Y1 - 2014/6

N2 - We report the ferromagnetism with Cure temperature T c at 230 K in a new diluted magnetic semiconductor (DMS) (Ba0.7K0.3)(Zn0.85Mn0.15)2As2 isostructural to ferropnictide 122 superconductors synthesized via low temperature sintering. Spin is doped by isovalence substitution of Mn2+for Zn2+, while charge is introduced by heterovalence substitution of K1+ for Ba2+ in (Ba0.7K0.3)(Zn0.85Mn0.15)2As2 DMS, being different from (Ga,Mn)As where both spin & charge are induced simultaneously by heterovalence substation of Mn2+ for Ga3+. The (Ba0.7K0.3)(Zn0.85Mn0.15)2As2 DMS shows spontaneous magnetization following T 3/2 dependence expected for a homogeneous ferromagnet with saturation moment 1.0μ B for each Mn atom.

AB - We report the ferromagnetism with Cure temperature T c at 230 K in a new diluted magnetic semiconductor (DMS) (Ba0.7K0.3)(Zn0.85Mn0.15)2As2 isostructural to ferropnictide 122 superconductors synthesized via low temperature sintering. Spin is doped by isovalence substitution of Mn2+for Zn2+, while charge is introduced by heterovalence substitution of K1+ for Ba2+ in (Ba0.7K0.3)(Zn0.85Mn0.15)2As2 DMS, being different from (Ga,Mn)As where both spin & charge are induced simultaneously by heterovalence substation of Mn2+ for Ga3+. The (Ba0.7K0.3)(Zn0.85Mn0.15)2As2 DMS shows spontaneous magnetization following T 3/2 dependence expected for a homogeneous ferromagnet with saturation moment 1.0μ B for each Mn atom.

KW - Decoupled spin charge doping

KW - Diluted magnetic semiconductors

KW - High Curie temperature

UR - https://www.scopus.com/pages/publications/84902546151

U2 - 10.1007/s11434-014-0398-z

DO - 10.1007/s11434-014-0398-z

M3 - 快报

AN - SCOPUS:84902546151

SN - 1001-6538

VL - 59

SP - 2524

EP - 2527

JO - Chinese Science Bulletin

JF - Chinese Science Bulletin

IS - 21

ER -

Ferromagnetism at 230 K in (Ba_0.7K_0.3)(Zn_0.85Mn_0.15)₂As₂ diluted magnetic semiconductor

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