Strain-induced first-order orbital flip transition and coexistence of charge-orbital ordered phases in Pr(0.5)Ca(0.5)MnO(3)

Journal article

Low-temperature transmission electron microscopy and x-ray diffraction (XRD) studies have been carried out on pellet and powder samples of Pr0.5 Ca0.5 MnO3. These studies have revealed appearance of a different type of charge-orbital ordered (COO) phase, resulting due to flipping of eg orbitals from d3 x2 - r2 / d3 y2 - r2 to d3 x2 - r2 / d3 z2 - r2 configuration. This orbital flip results in a changeover of the COO superlattice-ordering vector from (1/2,0,0) to (1/4,1/2,1/4) in the Pnma phas...

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Authors: Sagdeo, P; Lalla, N; Narlikar, A; Prabhakaran, D; Boothroyd, A

• Publication status: Published
• Journal: Physical Review B
• Volume: 78
• Issue: 17
• Publication date: 2008-11-01
• DOI: 10.1103/PhysRevB.78.174106
• EISSN: 1550-235X
• ISSN: 1098-0121
• Language: English