Abstract
Destabilization of the charge-ordered (CO) state in half-doped manganites by chromium (Cr) doping in the manganese (Mn) sites was investigated. The Cr doping in the half-doped manganites makes the CO state short-ranged and induces new ferromagnetic metallic (FMM) phase at low temperature. Real space images taken in the CO state by electron microscope clearly show coexistence of the short-ranged CO and FMM states, which is characterized as a microscopicscale phase separation. Furthermore, the CO state in the Cr-doped manganites has a superlattice structure with the incommensurate wave vector q = (1/2 - ε)a*o, where ε depends on the Cr concentration. These results suggest that the Cr doping suppresses the incommensurate to commensurate structural transition found in the half-doped manganites and produces new FMM phase.
Original language | English |
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Pages (from-to) | 267-271 |
Number of pages | 5 |
Journal | journal of the physical society of japan |
Volume | 70 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2001 Jan 1 |
Externally published | Yes |
Keywords
- Charge ordering
- Impurity effect
- Perovskite manganites
ASJC Scopus subject areas
- Physics and Astronomy(all)