Phase segregation in manganese perovskites

The structural, magnetic and transport phase diagrams of the manganese perovskites (A 1-xA' xMnO 3) are characterized by several phenomena, including high-temperature polaronic behavior, charge-orbital and magnetic ordering...

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Autors principals: Radaelli, P, Argyriou, D, Cox, D, Capogna, L, Casalta, H, Andersen, K, Cheong, S, Mitchell, J, Marezio, M
Format: Conference item
Publicat: Materials Research Society 1999
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Sumari:The structural, magnetic and transport phase diagrams of the manganese perovskites (A 1-xA' xMnO 3) are characterized by several phenomena, including high-temperature polaronic behavior, charge-orbital and magnetic ordering and colossal magnetoresistance (CMR). These properties can be tuned by changing the doping level, the electronic bandwidth, and the A-site disorder. To demonstrate this, the recent x-ray synchrotron and neutron diffraction data on the crystallographic and magnetic modulation in La 0.33Ca 0.67MnO 3 are presented.