Ferromagnetic resonance and magnetization studies on ferrimagnetic double perovskites A 2FeReO 6 (A = Ca, Sr, Ba)

S. E. Lofland, T. Scabarozi, S. Kale, S. M. Bhagat, S. B. Ogale, T. Venkatesan, R. L. Greene, J. Gopalakrishnan, K. Ramesha

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11 Scopus citations

Abstract

We present the results of an investigation of the magnetic properties A 2FeReO 6 (A = Ca, Sr, Ba). We have studied the magnetization, high-temperature susceptibility and the ferromagnetic resonance response. The Ba and Sr systems are conducting while the Ca material is an insulator. The ordering temperature of the Ca materials is highest (∼ 540K) and decreases to 315 K for the Ba system. The high-temperature susceptibilit suggests a large moment, and the Curie-Weiss temperature is very close to the ordering temperature, as expected for a simple ferromagnet, although the ferromagnetic moment is somewhat less than expected. The spin dynamics are rather peculiar: the ferromagnetic resonance results suggest a magnetically inhomogeneous material. We discuss these results in terms J of cation disorder.

Original languageEnglish (US)
Pages (from-to)2153-2155
Number of pages3
JournalIEEE Transactions on Magnetics
Volume37
Issue number4 I
DOIs
StatePublished - Jul 1 2001
Event8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States
Duration: Jan 7 2001Jan 11 2001

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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