Suppression of ferromagnetism in the LaVxCr1xGe3 system

Xiao Lin, Valentin Taufour, Sergey L. Bud'ko, and Paul C. Canfield
Phys. Rev. B 88, 094405 – Published 4 September 2013

Abstract

We report the synthesis of hexagonal LaVxCr1xGe3 (x=0–0.21, 1.00) single crystals and present a systematic study of this series by measurements of temperature- and field-dependent magnetic susceptibility, magnetization, resistivity, and specific heat. Ferromagnetism has been observed for x=0–0.21. The Curie temperature declines monotonically as the V concentration increases. Single-crystalline samples could only be grown for x values up to 0.21 for which the transition temperature was suppressed down to 36 K. Although we could not fully suppress TC via V substitution, for x=0.16, we performed magnetization measurements under pressure. The ferromagnetic state is suppressed under pressure at an initial rate of dTC/dp11.7 K/GPa and vanishes by 3.3 GPa. The increase of the Rhodes-Wohlfarth ratio suggests that the ferromagnetism in this system evolves toward itinerant as the V concentration increases.

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  • Received 30 May 2013

DOI:https://doi.org/10.1103/PhysRevB.88.094405

©2013 American Physical Society

Authors & Affiliations

Xiao Lin1, Valentin Taufour1, Sergey L. Bud'ko1,2, and Paul C. Canfield1,2

  • 1Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA
  • 2Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, Iowa 50011, USA

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Issue

Vol. 88, Iss. 9 — 1 September 2013

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