La1−xSrxFeO3 solid solutions in magnetic field. Issue 1 (January 2018)

• Record Type: Journal Article
• Authors: Wu, Huan; Xia, Zhengcai; Zhang, Xiaoxing; Huang, Sha; Wei, Meng; Yang, Feng; Song, Yujie; Xiao, Guiling; Ouyang, Zhongwen; Wang, Zhenxing
• Is Part Of: Ceramics international. Volume 44:Issue 1(2018)
• Page Start: 146
• Page End: 153
• Publication Date: 2018-01
• Subjects: Charge disproportionation -- Lattice distortion -- Dopant -- Magnetic transition; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2017.09.150
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Magnetic properties of La1- x Sr x FeO3 ( x = 0, 0.1, 0.2, 0.3, 0.4 and 0.5) have been investigated in a wide magnetic field range from 0 to 35 T using pulsed high magnetic field magnetization and electron spin resonance measurements. Experimental results show that both the non-magnetic Sr 2+ dopant and high magnetic fields affect the stability of the robust antiferromagnetic coupling between Fe ions and induce new phase transitions. Especially the phase transition temperatures and hysteresis behavior show a high sensitivity on the Sr dopant and its doping level. On the other hand, a nonlinear Sr doping level dependence of the transition temperatures and hysteresis behavior were observed, indicating that the charge disproportionation is not the sole influence. Thus, in the series Sr doping La1- x Sr x FeO3 samples, the dopant induced FeO6 octahedron distortion and charge disproportionation are coexistence and competition, which leads to a complicated and Sr doping level nonlinearly dependent magnetization behavior.