Study of the structure, structural transition, interface model, and magnetic moments of CrN grown on MgO(001) by molecular beam epitaxy

被引：8

作者：

Alam, Khan ^{[1
,2
]}

Ponce-Perez, Rodrigo ^{[3
,4
]}

Sun, Kai ^{[5
]}

Foley, Andrew ^{[3
,4
]}

Takeuchi, Noboru ^{[3
,4
]}

Smith, Arthur R. ^{[3
,4
]}

机构：

[1] King Fahd Univ Petr & Minerals, Dept Phys, Dhahran 31261, Saudi Arabia

[2] King Fahd Univ Petr & Minerals, Interdisciplinary Res Ctr Renewable Energy & Power, Dhahran 31261, Saudi Arabia

[3] Ohio Univ, Nanoscale & Quantum Phenomena Inst, Dept Phys & Astron, Athens, OH 45701 USA

[4] Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22800, Baja California, Mexico

[5] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A | 2023年 / 41卷 / 05期

关键词：

MECHANICAL-PROPERTIES; CHROMIUM NITRIDE; STABILITY; PHASE; MICROSTRUCTURE; STRESS;

D O I：

10.1116/6.0002546

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Structural phase transition is studied in high quality CrN thin films grown by molecular beam epitaxy on MgO(001) substrates. Cross-sectional transmission electron microscopy and x-ray diffraction reveal that the epitaxial relationship between CrN film and MgO substrate is [ 100 ] CrN / [ 100 ]( MgO), [ 110 ] CrN / [ 110 ] (MgO), and [ 001 ] CrN / [ 001 ] MgO. The films show tensile strain/compression at the CrN/MgO(001) interface, which relaxes gradually with the film growth. Temperature dependent x-ray diffraction measurements show a first-order structural phase transition. In addition to the experimental measurements, first-principles theoretical calculations have been carried out for finding a stable model for the CrN/MgO interface. These calculations determine two possible models for the interface, where a monolayer of chromium oxide is formed between the CrN and MgO layers.

引用

页数：8

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