Synthesis and Magnetic Properties of $ Fe_{1.1} $$ Ga_{0.9} $$ O_{3} $, Measured According to Electron Spin Resonance

Abstract The authors study the formation of crystals of Fe-Ga oxides and Fe–Ga–Cu borates in a multicomponent flux system based on $ Bi_{2} $$ Mo_{3} $$ O_{12} $–$ Na_{2} $$ B_{4} $$ O_{7} $. The Curie–Weiss temperature ($ θ_{CW} $ = 289 K) and the temperature of the ferrimagnet–paramagnet phase tra...
Ausführliche Beschreibung

Abstract The authors study the formation of crystals of Fe-Ga oxides and Fe–Ga–Cu borates in a multicomponent flux system based on $ Bi_{2} $$ Mo_{3} $$ O_{12} $–$ Na_{2} $$ B_{4} $$ O_{7} $. The Curie–Weiss temperature ($ θ_{CW} $ = 289 K) and the temperature of the ferrimagnet–paramagnet phase transition (TC = 288 K) are determined from the electron spin resonance (ESR) spectrum and the magnetization of an $ Fe_{1.1} $$ Ga_{0.9} $$ O_{3} $ single crystal, depending on temperature. Lines of spin-wave resonance are observed in the spectrum of magnetic resonance in the ordered phase. Ausführliche Beschreibung