Thermal expansion characteristics associated with spin fluctuations under applied magnetic field and high pressure for Lu(Co0.9Ga 0.1)2 laves-phase compound

Motoki Ohta, Asaya Fujita, Kazuaki Fukamichi, Hidekazu Saito, Tomoko Kagayama, Gendo Oomi, Tsuneaki Goto

Research output: Contribution to journalArticlepeer-review

Abstract

The thermal expansion measurements under several kinds of conditions have been carried out for Lu(Co0.90Ga0.10)2 Laves-phase compound. With decreasing temperature, the significant increase of the thermal expansion due to the spontaneous volume magnetostriction ωm(T) appears at low temperatures. Under magnetic fields, ωm(T) spreads over a wide range of temperature due to the induced ferromagnetic moment above TC. On the other hand, ωm(T) becomes smaller by applying hydrostatic pressure p, in addition to the significant decrease of TC. At p=1.1 GPa, ferromagnetic state disappears and the thermal expansion curve becomes close to that of paramagnetic Lu(Co0.91Ga0.09)2

Original languageEnglish
Pages (from-to)84-85
Number of pages2
Journaljournal of the physical society of japan
Volume76
Issue numberSUPPL. A
DOIs
Publication statusPublished - 2007

Keywords

  • Itinerant-electron metamagnetism
  • Magnetovolume effect
  • Pressure effect
  • Spontaneous volume magnetostriction
  • Thermal expansion

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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