Magnetic and dielectric studies of multiferroic CuO nanoparticles confined to porous glass

E. V. Charnaya, M. K. Lee, C. Tien, V. N. Pak, D. V. Formus, A. L. Pirozerskii, A. I. Nedbai, E. V. Ubyivovk, S. V. Baryshnikov, L. J. Chang

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Dc magnetization and ac electric permittivity were measured for the CuO-porous glass nanocomposite made and for pressed powder CuO. Magnetization curves showed a bend between two linear segments for both the nanocomposite and bulk cupric oxide at 230 K evidencing that the temperature of the transition from the paramagnetic into multiferroic phase did not change noticeably under nanoconfinement. Results suggested also a reduction of the temperature of the second transition into the collinear antiferromagnetic phase. ZFC and FC magnetizations were found to bifurcate for the nanocomposite and bulk CuO. The bifurcation was accompanied with peaks on ZFC magnetization.

Original languageEnglish
Pages (from-to)2921-2925
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume324
Issue number18
DOIs
Publication statusPublished - 2012 Sep

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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