Effect of pressure on magnetic and transport properties of CaMn 1-xRuxO3 (x=0-0.15): Collapse of ferromagnetic phase in CaMn0.9Ru0.1O3

V. Markovich, I. Fita, R. Puzniak, E. Rozenberg, C. Martin, A. Wisniewski, A. Maignan, B. Raveau, Y. Yuzhelevskii, G. Gorodetsky

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32 Scopus citations

Abstract

Magnetic and transport properties of CaMn1-xRuxO 3 (x=0;0.1;0.15) perovskites were investigated in the temperature range 4.2-280 K, magnetic fields up to 15 kOe and hydrostatic pressure up to 12 kbar. It was found that for a substitution of x=0.1, an applied pressure of 12 kbar shifts up the magnetic transition temperature by ∼14 K and simultaneously drastically suppresses the ferromagnetic metallic phase. For x=0.15, the application of pressure reduces transition temperature by about -0.28 K/kbar and suppresses the FM phase in a less pronounced manner. Observed changes in resistivity and magnetoresistance of CaMn0.9Ru 0.1O3 are described by suppression of the double-exchange interactions under pressure. They are discussed in the context of the phase separation and valency effects.

Original languageEnglish
Article number024403
Pages (from-to)024403-1-024403-5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume70
Issue number2
DOIs
StatePublished - 1 Jul 2004

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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