Oxygen stoichiometry and magnetic properties of LuFe2O 4+δ

Fan Wang, Jungho Kim, G. D. Gu, Yongjae Lee, Saebyok Bae, Young June Kim

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

We report a comprehensive investigation of the magnetic properties of LuFe2O4 (LFO) samples with different oxygen stoichiometries. Samples with excess oxygen exhibit spin glass behavior without long-range magnetic order, while three-dimensional ferrimagnetic order exists in a stoichiometric sample. Dissimilar experimental observations reported in several papers can be understood consistently when oxygen stoichiometry is taken into account. The stoichiometric sample orders magnetically below TN = 243 K, and a monoclinic lattice distortion sets in below TL = 175 K. This structural change is sensitive to the applied magnetic field, indicating strong spin-lattice coupling in this material. Unusual low-field thermal magnetization behavior was observed near TL, and its origin is discussed.

Original languageEnglish
Article number063909
JournalJournal of Applied Physics
Volume113
Issue number6
DOIs
Publication statusPublished - 2013 Feb 14

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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