Phase transition from Pnma I to Pnma II in the 57Fe-doped LaMnO3+δ compound
The structural phase transition from Pnma I to Pnma II in the 3% 57Fe-doped lanthanum manganite LaMnO3+delta has been investigated under heat treatment. It has been shown that the phase transition in the LaMnO3+delta compound goes through the formation of the intermediate phase Pnma II* under vacuum...
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| Veröffentlicht in: | Physica. C, Superconductivity Superconductivity, 2005-02, Vol.418 (3-4), p.144-150 |
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| container_title | Physica. C, Superconductivity |
| container_volume | 418 |
| creator | Sedykh, V. Abrosimova, G.E. Shekhtman, V.Sh Zver’kova, I.I. Dubovitskii, A.V. Kulakov, V.I. |
| description | The structural phase transition from Pnma I to Pnma II in the 3% 57Fe-doped lanthanum manganite LaMnO3+delta has been investigated under heat treatment. It has been shown that the phase transition in the LaMnO3+delta compound goes through the formation of the intermediate phase Pnma II* under vacuum annealing at T=650 deg C (from 2 to 22h). The transition from one phase to another, Pnma I- > Pnma II*- > Pnma II, occurs virtually by jump. It follows from the Mossbauer investigations that two types of environments with stronger and weaker distortion exist in the Pnma II* and Pnma II phases in contrast to Pnma I and , in which one type of environment takes place only. |
| doi_str_mv | 10.1016/j.physc.2004.11.020 |
| format | Article |
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It has been shown that the phase transition in the LaMnO3+delta compound goes through the formation of the intermediate phase Pnma II* under vacuum annealing at T=650 deg C (from 2 to 22h). The transition from one phase to another, Pnma I- > Pnma II*- > Pnma II, occurs virtually by jump. It follows from the Mossbauer investigations that two types of environments with stronger and weaker distortion exist in the Pnma II* and Pnma II phases in contrast to Pnma I and , in which one type of environment takes place only.</abstract><doi>10.1016/j.physc.2004.11.020</doi><tpages>7</tpages></addata></record> |
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| ispartof | Physica. C, Superconductivity, 2005-02, Vol.418 (3-4), p.144-150 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| title | Phase transition from Pnma I to Pnma II in the 57Fe-doped LaMnO3+δ compound |
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