ChemInform Abstract: A Ferrimagnetic Manganese Oxide with a Layered Perovskite-Type Structure: YBaMn2O5.

ChemInform ◽  
2010 ◽  
Vol 28 (5) ◽  
pp. no-no
Author(s):  
J. P. CHAPMAN ◽  
J. P. ATTFIELD ◽  
M. MOLGG ◽  
C. M. FRIEND ◽  
T. P. BEALES
Keyword(s):  
Manganese Oxide ◽  
Type Structure ◽  
Layered Perovskite ◽  
Perovskite Type ◽  
Perovskite Type Structure

Optical Spectra, EPR, and Spin–Lattice Relaxation of Yb3+ Ions in Crystals Having Perovskite-Type Structure

1977 ◽  
Vol 81 (1) ◽  
pp. 287-293 ◽  
Author(s):  
A. A. Antipin ◽  
A. V. Vinokurov ◽  
M. P. Davydova ◽  
S. L. Korableva ◽  
A. L. Stolov ◽  
...  
Keyword(s):  
Lattice Relaxation ◽  
Optical Spectra ◽  
Type Structure ◽  
Spin Lattice Relaxation ◽  
Spin Lattice ◽  
Perovskite Type ◽  
Perovskite Type Structure

scholarly journals Crystal structures of isotypic poly[bis(benzimidazolium) [tetra-μ-iodido-stannate(II)]] and poly[bis(5,6-difluorobenzimidazolium) [tetra-μ-iodido-stannate(II)]]

2014 ◽  
Vol 70 (10) ◽  
pp. 178-182 ◽  
Author(s):  
Iwan Zimmermann ◽  
Tony D. Keene ◽  
Jürg Hauser ◽  
Silvio Decurtins ◽  
Shi-Xia Liu
Keyword(s):  
Hydrogen Bonds ◽  
Point Group ◽  
Van Der Waals Interactions ◽  
Group Symmetry ◽  
Layered Perovskite ◽  
Out Of Plane ◽  
Related Compounds ◽  
Perovskite Type ◽  
Inorganic Layers ◽  
Perovskite Type Structure

The isostructural title compounds, {(C7H7N2)2[SnI4]}n, (1), and {(C7H5F2N2)2[SnI4]}n, (2), show a layered perovskite-type structure composed of anionic {[SnI4]2−}nsheets parallel to (100), which are decorated on both sides with templating benzimidazolium or 5,6-difluorobenzimidazolium cations, respectively. These planar organic heterocycles mainly form N—H...I hydrogen bonds to the terminal I atoms of the corner-sharing [SnI6] octahedra (point group symmetry 2) from the inorganic layer, but not to the bridging ones. This is in contrast to most of the reported structures of related compounds where ammonium cations are involved. Here hydrogen bonding to both types of iodine atoms and thereby a distortion of the inorganic layers to various extents is observed. For (1) and (2), all Sn—I—Sn angles are linear and no out-of-plane distortions of the inorganic layers occur, a fact of relevance in view of the material properties. The arrangement of the aromatic cations is mainly determined through the direction of the N—H...I hydrogen bonds. The coherence between organic bilayers along [100] is mainly achieved through van der Waals interactions.

Thermoelectric Oxides and Oxynitrides with Perovskite-type Structure

2007 ◽  
Vol 1044 ◽  
Author(s):  
Anke Weidenkaff ◽  
Laura Bocher ◽  
Rosa Robert ◽  
Myriam Aguirre ◽  
Dmitry Logvinovich
Keyword(s):  
Transition Metal Oxides ◽  
Lattice Thermal Conductivity ◽  
Complex Oxide ◽  
Type Structure ◽  
Soft Chemistry ◽  
Large Power ◽  
Thermoelectric Oxides ◽  
Synthesis Routes ◽  
Perovskite Type ◽  
Perovskite Type Structure

AbstractTransition metal oxides and oxynitrides with perovskite-type structures are potential high temperature stable thermoelectric materials. With innovative soft chemistry synthesis procedures the crystallite size in complex oxide ceramics with perovskite-type structure can be decreased compared to classical synthesis routes and allows to lower the heat conductivity dramatically while a large power factor can be maintained at the same time. Submicron crystallites are beneficial to lower the lattice thermal conductivity without influencing the electron mobility.In this work, perovskite-type cobaltates, molybdates and manganates are studied. The influence of heterostructures and nanocrystalline domains in perovskite oxides/oxynitrides and the correlation with transport properties and Seebeck coefficient will be discussed.

Synthesis and physical properties of new high temperature seignettomagnetics in the systems with perovskite type structure

1997 ◽  
Vol 204 (1) ◽  
pp. 345-355 ◽  
Author(s):  
V. V. Gagulin ◽  
S. K. Korchagina ◽  
Yu. A. Shevchuk ◽  
N. V. Fadeeva ◽  
V. V. Bogatko
Keyword(s):  
High Temperature ◽  
Physical Properties ◽  
Type Structure ◽  
Perovskite Type ◽  
Perovskite Type Structure
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