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Commensurate structural modulation in the charge- and orbitally ordered phase of the quadruple perovskite (NaMn3) Mn4 O12 (Articolo in rivista)
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- Commensurate structural modulation in the charge- and orbitally ordered phase of the quadruple perovskite (NaMn3) Mn4 O12 (Articolo in rivista) (literal)
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- 2014-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1103/PhysRevB.90.180101 (literal)
- Alternative label
Prodi, Andrea; Daoud-Aladine, Aziz; Gozzo, Fabia; Schmitt, Bernd; Lebedev, Oleg I.; Van Tendeloo, Gustaaf; Gilioli, Edi; Bolzoni, Fulvio; Aruga-Katori, Hiroko; Takagi, H.; Marezio, Massimo; Gauzzi, Andrea (2014)
Commensurate structural modulation in the charge- and orbitally ordered phase of the quadruple perovskite (NaMn3) Mn4 O12
in Physical review. B, Condensed matter and materials physics
(literal)
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- Prodi, Andrea; Daoud-Aladine, Aziz; Gozzo, Fabia; Schmitt, Bernd; Lebedev, Oleg I.; Van Tendeloo, Gustaaf; Gilioli, Edi; Bolzoni, Fulvio; Aruga-Katori, Hiroko; Takagi, H.; Marezio, Massimo; Gauzzi, Andrea (literal)
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- Paul Scherrer Institut; ISIS Facility; Universiteit Antwerpen; Consiglio Nazionale delle Ricerche; RIKEN (The Institute of Physical and Chemical Research); CRETA-CNRS; Universite Paris Sorbonne - Paris IV (literal)
- Titolo
- Commensurate structural modulation in the charge- and orbitally ordered phase of the quadruple perovskite (NaMn3) Mn4 O12 (literal)
- Abstract
- By means of synchrotron x-ray and electron diffraction, we studied the structural changes at the charge order transition TCO=176 K in the mixed-valence quadruple perovskite (NaMn3)Mn4O12. Below TCO we find satellite peaks indicating a commensurate structural modulation with the same propagation vector q=(1/2,0,-1/2) of the CE magnetic structure that orders at low temperatures, similarly to the case of simple perovskites such as La0.5Ca0.5MnO3. In the present case, the modulated structure, together with the observation of a large entropy change at TCO, gives evidence of a rare case of full Mn3+/Mn4+ charge and orbital order, consistent with the Goodenough-Kanamori model. (literal)
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