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Experimental inspection of a computationally-designed NiCrMnSi Heusler alloy with high Curie temperature

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Author(s)

  • Yuta Onodera
  • Kelvin Elphick
  • Takuro Kanemura
  • Tufan Roy
  • Tomoki Tsuchiya
  • Masahito Tsujikawa
  • Kenta Yoshida
  • Yasuyoshi Nagai
  • Shigemi Mizukami
  • Atsufumi Hirohata
  • Masafumi Shirai

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Publication details

JournalJapanese Journal of Applied Physics
DateAccepted/In press - 12 Jun 2020
DateE-pub ahead of print (current) - 29 Jun 2020
Issue number7
Volume59
Number of pages6
Pages (from-to)1-6
Early online date29/06/20
Original languageEnglish

Abstract

Nowadays advanced magnetic tunnel junction applications demand very high tunnel magnetoresistance at room temperature, thus it is quite important to explore high Curie temperature Tc half-metallic Heusler alloys. In this article rst-principles calculation unveiled that NiCrMnSi has Tc of 1200 K comparable to that of the traditional Co2MnSi Heusler alloys, even though it does not contain Co element. In addition, we examined whether NiCrMnSi Heulser phase lms can be obtained by a magnetron sputtering on MgO substrates. The results of the structural analysis and rst-principles calculations indicated that NiCrMnSi Heusler phase is metastable. A possible route to obtain metastable NiCrMnSi Heusler alloy is to utilize appropriate templates.

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© 2020 The Japan Society of Applied Physics. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy.

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