Lofland, S. E. ; Scabarozi, T. ; Kale, S. ; Bhagat, S. M. ; Ogale, S. B. ; Venkatesan, T. ; Greene, R. L. ; Gopalakrishnan, J. ; Ramesha, K. (2001) Ferromagnetic resonance and magnetization studies on ferrimagnetic double perovskites A2FeReO6 (A=Ca, Sr, Ba) IEEE Transactions on Magnetics, 37 (3). pp. 2153-2155. ISSN 0018-9464
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Related URL: http://dx.doi.org/10.1109/20.951109
Abstract
We present the results of an investigation of the magnetic properties of A2FeReOe (A=Ca, Sr, Ba). We have studied the magnetization, high-temperature susceptibility and the ferromagnetic resonance response. The Ba and Sr systems are conducting while the Ca material is an insulator. The ordering temperature of the Ca materials is highest (~540 K) and decreases to 315 K for the Ba system. The high-temperature susceptibility suggests a large moment, and the Curie-Weiss temperature is very close to the ordering temperature, as expected for a simple ferromagnet, although the ferromagnetic moment is somewhat less than expected. The spin dynamics are rather peculiar: the ferromagnetic resonance results suggest a magnetically inhomogeneous material. We discuss these results in terms of cation disorder.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to IEEE. |
| ID Code: | 84303 |
| Deposited On: | 24 Feb 2012 15:34 |
| Last Modified: | 06 Jul 2012 08:16 |
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