Direct band-gap measurement on epitaxial Co2FeAl0.5Si0.5 Heusler-alloy films

被引：5

作者：

Alhuwaymel, Tariq F. ^{[1
,2
]}

Carpenter, Robert ^{[3
]}

Yu, Chris Nga Tung ^{[3
]}

Kuerbanjiang, Balati ^{[3
]}

Abdullah, Ranjdar M. ^{[1
]}

Lazarov, Vlado K. ^{[3
]}

El-Gomati, Mohamed ^{[1
]}

Hirohata, Atsufumi ^{[1
,4
]}

机构：

[1] Univ York, Dept Elect, York YO10 5DD, N Yorkshire, England

[2] KACST, Natl Nanotechnol Ctr, Riyadh, Saudi Arabia

[3] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England

[4] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2015年 / 117卷 / 17期

基金：

英国工程与自然科学研究理事会;

关键词：

SPIN POLARIZATION; ENERGY;

D O I：

10.1063/1.4916817

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this study, a newly developed band-gap measurement technique has been used to characterise epitaxial Co2FeAl0.5Si0.5 (CFAS) films. The CFAS films were deposited on MgO(001) substrate by ultra high vacuum molecular beam epitaxy. The band-gap for the as deposited films was found to be similar to 110 meV when measured at room temperature. This simple technique provides a macroscopic analysis of the half-metallic properties of a thin film. This allows for simple optimisation of growth and annealing conditions. (c) 2015 AIP Publishing LLC.

引用

页数：4

共 18 条

[1] New Bandgap Measurement Technique for a Half-Metallic Ferromagnet [J].

Alhuwaymel, Tariq F. ;

Abdullah, Ranjdar M. ;

Whear, Oliver ;

Huminiuc, Teodor ;

Carpenter, Robert ;

El-Gomati, Mohamed ;

Hirohata, Atsufumi .

IEEE TRANSACTIONS ON MAGNETICS, 2014, 50 (11)

[2] Structural and magnetic properties of Co2FeAl1-xSix [J].

Balke, Benjamin ;

Fecher, Gerhard H. ;

Felser, Claudia .

APPLIED PHYSICS LETTERS, 2007, 90 (24)

[3] Room-temperature observation of high-spin polarization of epitaxial CrO2(100) island films at the Fermi energy [J].

Dedkov, YS ;

Fonine, M ;

König, C ;

Rüdiger, U ;

Güntherodt, G ;

Senz, S ;

Hesse, D .

APPLIED PHYSICS LETTERS, 2002, 80 (22) :4181-4183

[4] Spintronics: A challenge for materials science and solid-state chemistry [J].

Felser, Claudia ;

Fecher, Gerhard H. ;

Balke, Benjamin .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2007, 46 (05) :668-699

[5] Heusler alloy/semiconductor hybrid structures [J].

Hirohata, A. ;

Kikuchi, A. ;

Tezuka, N. ;

Inomata, K. ;

Claydon, J. S. ;

Xu, Y. B. ;

van der Laan, G. .

CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE, 2006, 10 (02) :93-107

[6] Structural and magnetic properties of epitaxial L21-structured Co2(CrFe)Al films grown on GaAs(001) substrates -: art. no. 103714 [J].

Hirohata, A ;

Kurebayashi, H ;

Okamura, S ;

Kikuchi, M ;

Masaki, T ;

Nozaki, T ;

Tezuka, N ;

Inomata, K .

JOURNAL OF APPLIED PHYSICS, 2005, 97 (10)

[7]

Hirohata A., 2012, SPIN CURRENT, P49

[8] Optimization of exchange bias in Co2FeAl0.5Si0.5 Heusler alloy layers [J].

Hirohata, Atsufumi ;

Izumida, Keisuke ;

Ishizawa, Satoshi ;

Sagar, James ;

Nakayama, Tadachika .

JOURNAL OF APPLIED PHYSICS, 2014, 115 (17)

[9] Ferromagnetic InMnSb multi-phase films study by aberration-corrected (scanning) transmission electron microscopy [J].

Lari, Leonardo ;

Lea, Stephen ;

Feeser, Caitlin ;

Wessels, Bruce W. ;

Lazarov, Vlado K. .

JOURNAL OF APPLIED PHYSICS, 2012, 111 (07)

[10]

Müller GM, 2009, NAT MATER, V8, P56, DOI [10.1038/NMAT2341, 10.1038/nmat2341]

← 1 2 →