Magnetic properties of pure and Gd-doped EuO probed by NMR

Arnaud Comment, Jean Philippe Ansermet, Charles P. Slichter, Heesuk Rho, Clark S. Snow, S. Lance Cooper

Research output: Contribution to journalArticlepeer-review

Abstract

An Eu NMR study in the ferromagnetic phase of pure and Gd-doped EuO was performed. A complete description of the NMR line shape of pure EuO allowed for the influence of doping EuO with Gd impurities to be highlighted. The presence of a temperature-dependent static magnetic inhomogeneity in Gd-doped EuO was demonstrated by studying the temperature dependence of the line shapes. The results suggest that the inhomogeneity in 0.6% Gd-doped EuO is linked to colossal magnetoresistance. The measurement of the spin-lattice relaxation times as a function of temperature led to the determination of the value of the exchange integral J as a function of Gd doping. It was found that J is temperature independent and spatially homogeneous for all samples and that its value increases abruptly with increasing Gd doping.

Original languageEnglish (US)
Article number014428
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number1
DOIs
StatePublished - 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Magnetic properties of pure and Gd-doped EuO probed by NMR'. Together they form a unique fingerprint.

Cite this