Journal ArticleDOI
X-ray study of the low-temperature phase of [NaMn3+3](Mn3+2Mn4+2)O12, a perovskite-like compound
TLDR
In this article, the perovskite-like compound [NaMn3+3]O12 undergoes a crystallographic phase transition at 190 K. The lowering of the symmetry from cubic to monoclinic is the result of a cooperative Jahn-Teller effect which induces a 1:1 order between the Mn3+ and the Mn4+ cations occupying the octahedral sites.About:
This article is published in Solid State Communications.The article was published on 1975-06-01. It has received 9 citations till now. The article focuses on the topics: Perovskite (structure) & Monoclinic crystal system.read more
Citations
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Journal ArticleDOI
Charge, orbital and spin ordering phenomena in the mixed valence manganite (NaMn3+(3))(Mn3+(2)Mn4+(2))O12.
A. Prodi,Edmondo Gilioli,A. Gauzzi,F. Licci,M. Marezio,F. Bolzoni,Qingzhen Huang,A. Santoro,J. W. Lynn +8 more
TL;DR: It is shown that the absence of disorder enables the unambiguous determination of symmetry, the direct observation of full, or nearly full, charge ordering of Mn3 and Mn4+ in distinct crystallographic sites, and a nearly perfect orbital ordering of the Mn3+ octahedra.
Journal ArticleDOI
Giant Magnetoresistance in CaCu3Mn4O12-Based Oxides with Perovskite-Type Structure
TL;DR: In this article, a body-centered cubic variant of the perovskite structure was used for the preparation of a number of materials, such as CaMn7O12, CaCu2.5Mn4.5O12 and CaCu1.5mn5.5
Journal ArticleDOI
Synthesis and crystal structure of (ThCu3)(Mn3+2Mn4+2)O12, a new ferrimagnetic perovskite-like compound
TL;DR: In this article, single crystals of [ThCu3](Mn3+2Mn4+2]O12, a ferrimagnetic perovskite-like compound, were synthesized by hydrothermal conditions at 600°C and 2 kbar.
Journal ArticleDOI
Group-theoretical analysis of 1:3 A-site-ordered perovskite formation.
TL;DR: A group-theoretical analysis of 1:3 A-site-ordered perovskite structures is reported and it is reported that the structures have low adhesion to each other and to the surrounding rock.
Journal ArticleDOI
P–T phase diagram and single crystal structural refinement of NaMn7O12
Edmondo Gilioli,Gianluca Calestani,F. Licci,Andrea Gauzzi,Fulvio Bolzoni,A. Prodi,M. Marezio +6 more
TL;DR: The double perovskite NaMn7O12 was synthesized by a solid state reaction carried out under several GPa at a relatively low temperatures as mentioned in this paper, where the reaction yields were optimized by using a Mn Na citrate precursor, and by optimizing the Na concentration in the reagents.
References
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High pressure synthesis and crystal structure of NaMn7O12
TL;DR: A perovskite-like arrangement of NaMn7O12 has been synthesized at 80 kbar and 1000°C in this paper, and the final R and wR factors were 0.025 and 0.033, respectively.
Journal ArticleDOI
High pressure synthesis and crystal structure of a new series of perovskite-like compounds CMn7O12 (C = Na, Ca, Cd, Sr, La, Nd)
TL;DR: In this paper, a series of perovskite-like compounds CMn7O12 have been synthesized under high pressure and high temperature conditions, and the structures of the quenched materials have been determined from powder X-ray data.