Relationships between crystal structure and magnetic properties in type-A heteroepitaxial MnAs thin films

J. H. Song; Y. Cui; J. B. Ketterson

doi:10.1063/1.3673822

Relationships between crystal structure and magnetic properties in type-A heteroepitaxial MnAs thin films

J. H. Song^*, Y. Cui, J. B. Ketterson

^*Corresponding author for this work

Physics and Astronomy

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

6 Scopus citations

Abstract

We grew heteroepitaxial type-A MnAs thin films on GaAs(001) and Si(001) substrates and compared their crystal structures and magnetic properties. The type-A MnAs on the GaAs(001) substrate shows similar structural and magnetic properties as those in bulk form. However, the structure of the type-A MnAs on the Si(001) substrate is compressed and stretched along the MnAs 1̄100 and MnAs 1̄1̄ 20 directions, respectively, and exhibits weak ferromagnetism with a T _c exceeding 400 K. These experimental observations indicate that the magnetic characteristics of MnAs are strongly correlated to the material's crystal structure.

Original language	English (US)
Article number	07E125
Journal	Journal of Applied Physics
Volume	111
Issue number	7
DOIs	https://doi.org/10.1063/1.3673822
State	Published - Apr 1 2012

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Relationships between crystal structure and magnetic properties in type-A heteroepitaxial MnAs thin films",

abstract = "We grew heteroepitaxial type-A MnAs thin films on GaAs(001) and Si(001) substrates and compared their crystal structures and magnetic properties. The type-A MnAs on the GaAs(001) substrate shows similar structural and magnetic properties as those in bulk form. However, the structure of the type-A MnAs on the Si(001) substrate is compressed and stretched along the MnAs {\=1}100 and MnAs {\=1}{\=1} 20 directions, respectively, and exhibits weak ferromagnetism with a T c exceeding 400 K. These experimental observations indicate that the magnetic characteristics of MnAs are strongly correlated to the material's crystal structure.",

author = "Song, {J. H.} and Y. Cui and Ketterson, {J. B.}",

note = "Funding Information: This work was supported by the Basic Science Research Program through the National Research Foundation Grant (NRF-2009-0071272), and by the Korean Ministry of Education, Science, and Technology through the Korea Science and Engineering Foundation grant (2009-0059220).",

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doi = "10.1063/1.3673822",

language = "English (US)",

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T1 - Relationships between crystal structure and magnetic properties in type-A heteroepitaxial MnAs thin films

AU - Song, J. H.

AU - Cui, Y.

AU - Ketterson, J. B.

N1 - Funding Information: This work was supported by the Basic Science Research Program through the National Research Foundation Grant (NRF-2009-0071272), and by the Korean Ministry of Education, Science, and Technology through the Korea Science and Engineering Foundation grant (2009-0059220).

PY - 2012/4/1

Y1 - 2012/4/1

N2 - We grew heteroepitaxial type-A MnAs thin films on GaAs(001) and Si(001) substrates and compared their crystal structures and magnetic properties. The type-A MnAs on the GaAs(001) substrate shows similar structural and magnetic properties as those in bulk form. However, the structure of the type-A MnAs on the Si(001) substrate is compressed and stretched along the MnAs 1̄100 and MnAs 1̄1̄ 20 directions, respectively, and exhibits weak ferromagnetism with a T c exceeding 400 K. These experimental observations indicate that the magnetic characteristics of MnAs are strongly correlated to the material's crystal structure.

AB - We grew heteroepitaxial type-A MnAs thin films on GaAs(001) and Si(001) substrates and compared their crystal structures and magnetic properties. The type-A MnAs on the GaAs(001) substrate shows similar structural and magnetic properties as those in bulk form. However, the structure of the type-A MnAs on the Si(001) substrate is compressed and stretched along the MnAs 1̄100 and MnAs 1̄1̄ 20 directions, respectively, and exhibits weak ferromagnetism with a T c exceeding 400 K. These experimental observations indicate that the magnetic characteristics of MnAs are strongly correlated to the material's crystal structure.

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Relationships between crystal structure and magnetic properties in type-A heteroepitaxial MnAs thin films

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