Fully ordered Sr2CrReO6 epitaxial films: A high-temperature ferrimagnetic semiconductor

被引：74

作者：

Hauser, A. J. ^{[1
]}

Soliz, J. R. ^{[2
]}

Dixit, M. ^{[3
]}

Williams, R. E. A. ^{[3
]}

Susner, M. A. ^{[3
]}

Peters, B. ^{[1
]}

Mier, L. M. ^{[2
]}

Gustafson, T. L. ^{[2
]}

Sumption, M. D. ^{[3
]}

Fraser, H. L. ^{[3
]}

Woodward, P. M. ^{[2
]}

Yang, F. Y. ^{[1
]}

机构：

[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[2] Ohio State Univ, Dept Chem, Columbus, OH 43210 USA

[3] Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43210 USA

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 16期

基金：

美国国家科学基金会;

关键词：

DOUBLE-PEROVSKITE SR2CRREO6; ROOM-TEMPERATURE; CURIE-TEMPERATURE; GROWTH;

D O I：

10.1103/PhysRevB.85.161201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report growth of Sr2CrReO6 epitaxial films with 99% Cr/Re ordering and crystalline perfection comparable to those of high-quality semiconductor films. The Sr2CrReO6 films show a Curie temperature of 508 K and a saturation magnetization of 1.29 mu B per formula unit, which confirms the presence of strong spin-orbit coupling. Unexpectedly, electrical transport and optical absorption measurements indicate that Sr2CrReO6 is a semiconductor with a band gap of 0.21 eV. The unique combination of high temperature ferrimagnetism and semiconductivity is both scientifically interesting and highly attractive for applications.

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页数：4

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