PUMA
Istituto dei materiali per l'elettronica ed il magnetismo     
Prodi A., Allodi G., Gilioli E., Licci F., Marezio M., Bolzoni F., Gauzzi A., De Renzi R. μSR study of AA'3Mn4O12 double perovskites. In: Physica B-Condensed Matter, vol. 374-375 pp. 55 - 58. Proceedings of the Tenth International Conference on Muon Spin Rotation, Relaxation and Resonance. Elsevier B.V, 2006.
 
 
Abstract
(English)
Zero-field mSR experiments were performed on a series of polycrystalline samples of AA'3Mn4O12 double perovskites synthesized under high pressure. Spontaneous precession frequencies, of comparable magnitude to those previously reported in LaMnO3, were observed in all the family members except CaMn7O12. For all the samples, mSR yielded determinations of the magnetic transition temperatures and of the order parameter in agreement with other techniques, but also revealed a peculiar phase separation in CaMn7O12, absent in the other compounds.
DOI: 10.1016/j.physb.2005.11.014
Subject Zero-field mSR
Double perovskite
Manganites
Jahn–Teller distortion
Superexchange
75.30.-m
75.47.Lx
76.75.+i


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