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.
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页数：4
相关论文
共 18 条
  • [1] New Bandgap Measurement Technique for a Half-Metallic Ferromagnet
    Alhuwaymel, Tariq F.
    Abdullah, Ranjdar M.
    Whear, Oliver
    Huminiuc, Teodor
    Carpenter, Robert
    El-Gomati, Mohamed
    Hirohata, Atsufumi
    [J]. IEEE TRANSACTIONS ON MAGNETICS, 2014, 50 (11)
  • [2] Structural and magnetic properties of Co2FeAl1-xSix
    Balke, Benjamin
    Fecher, Gerhard H.
    Felser, Claudia
    [J]. APPLIED PHYSICS LETTERS, 2007, 90 (24)
  • [3] Room-temperature observation of high-spin polarization of epitaxial CrO2(100) island films at the Fermi energy
    Dedkov, YS
    Fonine, M
    König, C
    Rüdiger, U
    Güntherodt, G
    Senz, S
    Hesse, D
    [J]. APPLIED PHYSICS LETTERS, 2002, 80 (22) : 4181 - 4183
  • [4] Spintronics: A challenge for materials science and solid-state chemistry
    Felser, Claudia
    Fecher, Gerhard H.
    Balke, Benjamin
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2007, 46 (05) : 668 - 699
  • [5] Heusler alloy/semiconductor hybrid structures
    Hirohata, A.
    Kikuchi, A.
    Tezuka, N.
    Inomata, K.
    Claydon, J. S.
    Xu, Y. B.
    van der Laan, G.
    [J]. 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
    Hirohata, A
    Kurebayashi, H
    Okamura, S
    Kikuchi, M
    Masaki, T
    Nozaki, T
    Tezuka, N
    Inomata, K
    [J]. 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
    Hirohata, Atsufumi
    Izumida, Keisuke
    Ishizawa, Satoshi
    Sagar, James
    Nakayama, Tadachika
    [J]. JOURNAL OF APPLIED PHYSICS, 2014, 115 (17)
  • [9] Ferromagnetic InMnSb multi-phase films study by aberration-corrected (scanning) transmission electron microscopy
    Lari, Leonardo
    Lea, Stephen
    Feeser, Caitlin
    Wessels, Bruce W.
    Lazarov, Vlado K.
    [J]. JOURNAL OF APPLIED PHYSICS, 2012, 111 (07)
  • [10] Müller GM, 2009, NAT MATER, V8, P56, DOI [10.1038/NMAT2341, 10.1038/nmat2341]
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