"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

The magnetic effects in Sr2FeMoO6 perovskite type compound obtained by soft chemistry

G. ALDICA1,* , C. PLAPCIANU1, P. BADICA2, C. VALSANGIACOM1, B. POPESCU1

Affiliation

  1. National Institute for Materials Physics, Bucharest, PO Box MG-7, RO 76900, Romania
  2. nstitute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

Abstract

Recently, a double perovskite oxide, Sr2FeMoO6, has been reported to show a very sharp magnetoresistance (MR) response at relatively smal-applied fields and at high temperatures. The half-metallic state of this compound ensures a theoretical magnetic moment of 4 µB per formula unit. Ordering control is expected to be influenced by the synthesis route. In this regard, in this article, perovskite samples were obtained from the liquid phase, using oxalic acid as complexing agent. Application of a field above 0.08 T increases the zero-field-cooled (ZFC) magnetization. Below this field, for the ZFC-curves measured from 2 K up to 400 K, magnetization increases, reaching a peak at ZFC T , before decreasing gradually to a paramagnetic state. Saturation moment is relatively low (2.1-2.2 µB), probably due to anti-site defects, as suggested in the literature..

Keywords

Spin-cluster effect, Half-metallic ferrimagnetic oxides, Sr2FeMoO6, Alternative method, ZFC and FC magnetization.

Submitted at: Jan. 18, 2006
Accepted at: March 23, 2006

Citation

G. ALDICA, C. PLAPCIANU, P. BADICA, C. VALSANGIACOM, B. POPESCU, The magnetic effects in Sr2FeMoO6 perovskite type compound obtained by soft chemistry, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 2, pp. 461-463 (2006)