Structural, magnetic and semiconducting properties of Fe doped SrSnO3

✍ Scribed by G. Prathiba; S. Venkatesh; N. Harish Kumar

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 624 KB
• Volume: 150
• Category: Article
• ISSN: 0038-1098
• DOI: 10.1016/j.ssc.2010.05.021

✦ Synopsis

a b s t r a c t SrSn 1-x Fe x O 3 (x = 0.03, 0.04, 0.05) was prepared by solid state synthesis technique. The structural, magnetic and transport properties of the doped samples were investigated. The Reitveld refinement of the X-Ray data for all the compositions was performed. The parent compound SrSnO 3 is a diamagnet. Room temperature ferromagnetism was observed in polycrystalline Fe doped SrSnO 3 . At room temperature the compositions SrSn 0.96 Fe 0.04 O 3 and SrSn 0.95 Fe 0.05 O 3 were ferromagnetic in nature. At 1.8 K all the compositions show ferromagnetic ordering. The theoretical electronic structure calculation showed that the Fermi energy (E F ) passes through the minority spin impurity states indicating the system to be half metallic. All the compositions show semiconducting behaviour in the resistivity measurements and with an increase in Fe concentration the conductivity of the sample increases as the activation energy decreases.