Strain Control of Giant Magnetic Anisotropy in Metallic Perovskite SrCoO3-delta Thin Films

Hu, Songbai1,2,6; Cazorla, Claudio2; Xiang, Feixian4; Ma, Hongfei1; Wang, Jianyuan5; Wang, Jianbo6; Wang, Xiaolin4; Ulrich, Clemens3; Chen, Lang1; Seidel, Jan2

2018-07-04

10.1021/acsami.8b03553

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

1944-8252

Magnetic materials with large magnetic anisotropy are essential for workaday applications such as permanent magnets and magnetic data storage. There is widespread interest in finding efficient ways of controlling magnetic anisotropy, among which strain control has proven to be a very powerful technique. Here, we demonstrate the strain-mediated magnetic anisotropy in SrCoO3-delta, thin film, a perovskite oxide that is metallic and adopts a cubic structure at delta < 0.25. We find that the easy-magnetization axis in SrCoO3-delta can be rotated by 90 degrees upon application of moderate epitaxial strains ranging from -1.2 to +1.8%. The magnetic anisotropy in compressive SrCoO3-delta thin films is huge, as shown by magnetic hysteresis loops rendering an anisotropy energy density of similar to 10(6) erg/cm(3) . The local variance in magnetic force microscopy upon temperature and magnetic field reveals that the evolution of magnetic domains in the SCO thin film is strongly dependent on magnetic anisotropy.

SrCoO3-delta thin films epitaxial strain magnetic anisotropy MFM DFT

SCI ; EI

英语

第一 ; 通讯

Australian Research Council through Discovery Grants and an ARC Future Fellowship[FT140100135]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000438179000063

AMER CHEMICAL SOC

20182405316919

Cobalt compounds ; Digital storage ; Magnetic domains ; Magnetic fields ; Magnetic force microscopy ; Magnetic materials ; Magnetic storage ; Magnetization ; Perovskite ; Perovskite solar cells ; Strain ; Strain control ; Strontium compounds ; Thin films

Minerals:482.2 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Magnetic Materials:708.4 ; Data Storage, Equipment and Techniques:722.1 ; Specific Variables Control:731.3 ; Materials Science:951

Web of Science

1.South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Peoples R China
2.UNSW Sydney, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia
3.UNSW Sydney, Sch Phys, Sydney, NSW 2052, Australia
4.Univ Wollongong, Inst Superconducting & Elect Mat, Australian Inst Innovat Mat, Spintron & Elect Mat Grp, Wollongong, NSW 2522, Australia
5.Northwestern Polytech Univ, Sch Nat & Appl Sci, Xian 710072, Shaanxi, Peoples R China
6.Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China

Hu, Songbai,Cazorla, Claudio,Xiang, Feixian,et al. Strain Control of Giant Magnetic Anisotropy in Metallic Perovskite SrCoO3-delta Thin Films[J]. ACS Applied Materials & Interfaces,2018,10(26):22348-22355.

Hu, Songbai.,Cazorla, Claudio.,Xiang, Feixian.,Ma, Hongfei.,Wang, Jianyuan.,...&Seidel, Jan.(2018).Strain Control of Giant Magnetic Anisotropy in Metallic Perovskite SrCoO3-delta Thin Films.ACS Applied Materials & Interfaces,10(26),22348-22355.

Hu, Songbai,et al."Strain Control of Giant Magnetic Anisotropy in Metallic Perovskite SrCoO3-delta Thin Films".ACS Applied Materials & Interfaces 10.26(2018):22348-22355.