Electrical and magnetic properties of La_0.35Sr_0.65Ti_1−xFe_xO₃thin films

Abstract

We report that the La(0.35)Sr(0.65)Ti(1-x)Fe(x)O(3) system forms a solid solution within the composition range 0≤x≤0.5 and a room temperature magnetic semiconductor phase exists at x = 0.20. This system shows an anomalous Hall effect and is ferromagnetic with a large moment per Fe ion. The results show that the strong La doping provides sufficient carriers to the system to maintain carrier-mediated ferromagnetism for low Fe doping. Furthermore, the presence of ferromagnetism within this phase space raises the possibility that the conduction, and hence the magnetism, could be electronically controlled.

Magnetoelastic effects in SrTi1−xMxO3(M = Fe, Co, or Cr) epitaxial thin films

“…Fe substituted SrTiO 3 has been the focus of interest for various applications such as electrochemical electrodes, gas sensors, and magnetic devices, 4,34,35 and the magnetic behavior of La 0.35 Sr 0.65 Ti 1−x Fe x O 3 (0.1 x 0.4) thin films 36 and bulk SrTiO 3 implanted with Fe 37 has been reported. Sr(Ti 1−x Fe x )O 3 (0 x 1) exhibits a continuous solid solution between SrTiO 3 and antiferromagnetic SrFeO 3 .…”

The Effect of A-Site Substitution of Ce and La on the Magnetic and Electronic Properties of Sr(Ti0.6Fe0.4)O3−δ Films

“…Perovskite-structured oxides can be epitaxially deposited on silicon coated with oxide buffer layers, and magnetic substitution can lead to intrinsic ferromagnetism, high resistivity and significant magneto-optical effects at near-infrared wavelengths, which makes them promising candidates for integrated optical devices. Room temperature ferromagnetism has been reported in various perovskite systems, such as Ba(Ti 1– x Fe x )O 3 , − Ba(Zr 1– x Fe x )O 3 , Sr(Ti 1– x Fe x )O 3 , La 0.35 Sr 0.65 (Ti 1–x Fe x )O 3 , Sr(Ti 1– x Co x )O 3 and Ba(Sn 1– x Fe x )O 3 …”

Ferromagnetism in single crystal and nanocomposite Sr(Ti,Fe)O3 epitaxial films

“…STF has been studied for various electrochemical devices designed for energy conversion and gas sensing, which include solid oxide fuel cell electrodes, electrochromic windows, oxygen sensors, and catalysts, due to its mixed-conducting character with high electronic and oxygen-ion conductivities. [25][26][27][28] However, there are fewer reports [29][30][31][32] concerning the magnetic properties of the material, especially for epitaxial films.…”