title: Effects of strain on the electronic structure and magnetic properties in SrMn0.5Fe0.5O3.
abstract: The electronic structure and magnetic properties of SrMn0.5Fe0.5O3 powder and films grown on (1 0 0)-SrTiO3 (STO) and (1 0 0)-LaAlO3 (LAO) substrates by pulsed laser deposition (PLD) were investigated by temperature dependent magnetization and soft x-ray absorption. The results exhibit characteristics of 3d (5) Fe(3+), [Formula: see text], and 3d (3)  +  3d (4) [Formula: see text] Mn(4+) at room temperature in all samples. However, the features of 3d (5) Fe(3+) and 3d (3) Mn(4+) increased significantly for SMFO/LAO at 35 K, which also displayed substantial competition between antiferromagnetic and ferromagnetic order well-above the Néel temperature of SrFeO3 (T N ~ 134 K). We attributed this to being caused by charge disproportionation resulting from ligand-hole localization, which is more favorable to take place when the sample is under compressive strain.
authors.affiliation: Department of Electrophysics, National Chiao Tung University, Hsinchu 30010, Taiwan.
authors.forename: Chun-Wei
authors.initials: CW
authors.lastname: Mi
authors.forename: Yi-Ying
authors.initials: YY
authors.lastname: Chin
authors.forename: Yen-Fu
authors.initials: YF
authors.lastname: Hsiao
authors.forename: Hau-Wei
authors.initials: HW
authors.lastname: Fang
authors.forename: Chih-Wei
authors.initials: CW
authors.lastname: Luo
authors.forename: Kaung-Hsiung
authors.initials: KH
authors.lastname: Wu
authors.forename: Tzeng-Ming
authors.initials: TM
authors.lastname: Uen
authors.forename: Jiunn-Yuan
authors.initials: JY
authors.lastname: Lin
authors.forename: Hong-Ji
authors.initials: HJ
authors.lastname: Lin
authors.forename: Jenh-Yih
authors.initials: JY
authors.lastname: Juang