Pressure Effect on Electronic Band Structure of NiAs-Type CrTe

Masafumi Takagaki, Takuya Kawakami, Norikazu Tanaka, Masafumi Shirai, Kazuko Motizuki

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14 Citations (Scopus)

Abstract

Pressure influence on the electronic band structure of NiAs-type CrTe is studied for nonmagnetic, ferromagnetic and antiferromagnetic states by using a self-consistent LAPW method. The total energy is calculated as a function of the lattice spacing a, keeping the ratio c/a as the observed value. The ferromagnetic state is stable energetically among three states for a > 3.83 A. For a < 3.83 A, the energy of antiferromagnetic state becomes lower than that of ferromagnetic state. Therefore pressure-induced ferromagnetic→antiferromagnetic transition is expected at about 20 GP. For the ferromagnetic state, which is realized below TC = 340 K, the theoretical lattice spacing a is obtained as 4.180 A, which agrees fairly well with the observed one (aobs = 3.981). The magnetic moment arises from mainly Cr-site and it is remarkably reduced by the pressure as observed. A small magnetic moment is induced at Te-site in the direction antiparallel to the moment at Cr-site.

Original languageEnglish
Pages (from-to)1014-1016
Number of pages3
Journaljournal of the physical society of japan
Volume67
Issue number3
DOIs
Publication statusPublished - 1998 Mar
Externally publishedYes

Keywords

  • Band structure
  • CrTe
  • Ferromagnetism
  • Pressure effect
  • Pressure-induced transition

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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