We present a study performed on several LaMnO3+x/2 compositions. Detailed analysis around x = 0.09 detects phase separation between a higher transition, T-c, and a lower one T-N, with coexisting fluctuating and magnetically ordered clusters (the Neel point, T-N, being the onset of an inhomogeneous non-collinear antiferromagnetic order detected by neutrons). The ordered clusters give rise to an extremely fast, static Kubo-Toyabe muon depolarization, while mixed static and dynamic local fields are detected inside the fluctuating clusters. Below T-N precession frequency lines are resolved, despite the huge broadening introduced by localized Mn4+ ordered moments. A phase diagram is obtained and briefly discussed in the context of electronic phase separation.
Phase diagram of low doping manganites / DE RENZI R.; ALLODI G.; AMORETTI G.; CESTELLI GUIDI M.; FANESI S.; G. GUIDI; F. LICCI; A. CANEIRO; F. PRADO; R. SANCHEZ; S. OSEROFF; A. AMATO. - In: PHYSICA. B, CONDENSED MATTER. - ISSN 0921-4526. - 289-290(2000), pp. 85-88. [10.1016/S0921-4526(00)00268-4]
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