Compounds of Hexavalent and Pentavalent Uranium with the Ordered Perovskite Structure

1962 ◽  
Vol 1 (4) ◽  
pp. 790-793 ◽  
Author(s):  
Arthur W. Sleight ◽  
Roland Ward
Keyword(s):  
Perovskite Structure ◽  
Pentavalent Uranium

scholarly journals Tilting and twisting in a novel perovzalate, K3NaMn(C2O4)3

2021 ◽  
Vol 57 (20) ◽  
pp. 2567-2570 ◽  
Author(s):  
Xiaolong He ◽  
Xinyuan Zhang ◽  
Bifa Ji ◽  
Wenjiao Yao ◽  
Philip Lightfoot ◽  
...  
Keyword(s):  
Perovskite Structure ◽  
Oxalate Ligand ◽  
Octahedral Tilting

A unique variant on the perovskite structure, K3NaMn(C2O4)3, has been identified with unconventional octahedral tilting, interpenetration of two topologically identical perovskite-like frameworks and an unusual, twisted oxalate ligand.

scholarly journals Tilt and Shift Polymorphism in Molecular Perovskites

2021 ◽  
Author(s):  
Stefan Burger ◽  
Shivani Grover ◽  
Keith Butler ◽  
Hanna Boström ◽  
Ricardo Grau-Crespo ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Perovskite Structure

Molecular perovskites, i.e. ABX3 coordination polymers with a perovskite structure are a chemical diverse material platform for studying properties of fundamental and applied purposes such as barocalorics and improper ferroelectrics....

scholarly journals Cubic Perovskite Structure of Black Formamidinium Lead Iodide, α-[HC(NH2)2]PbI3, at 298 K

2015 ◽  
Vol 6 (16) ◽  
pp. 3209-3212 ◽  
Author(s):  
Mark T. Weller ◽  
Oliver J. Weber ◽  
Jarvist M. Frost ◽  
Aron Walsh
Keyword(s):  
Perovskite Structure ◽  
Lead Iodide

Sputtered lead scandium tantalate thin films: Pb4+ in B sites in the perovskite structure

1997 ◽  
Vol 82 (11) ◽  
pp. 5686-5694 ◽  
Author(s):  
R. W. Whatmore ◽  
Z. Huang ◽  
M. Todd
Keyword(s):  
Thin Films ◽  
Perovskite Structure

Calcium substituting B-site in relaxor ferroelectrics with perovskite structure probed by chemical ordering

2005 ◽  
Vol 134 (6) ◽  
pp. 425-429 ◽  
Author(s):  
Ni Zhong ◽  
Wen-long Yao ◽  
Ping-hua Xiang ◽  
Chu-de Feng ◽  
Seiji Kojima
Keyword(s):  
Perovskite Structure ◽  
Relaxor Ferroelectrics ◽  
Chemical Ordering

scholarly journals Multidisciplinary impact of the deep mantle phase transition in perovskite structure

Eos ◽  
2005 ◽  
Vol 86 (1) ◽  
pp. 1 ◽  
Author(s):  
Thorne Lay ◽  
Dion Heinz ◽  
Miaki Ishii ◽  
Sang-Heon Shim ◽  
Jun Tsuchiya ◽  
...  
Keyword(s):  
Phase Transition ◽  
Perovskite Structure ◽  
Deep Mantle

Preparation and Characterization of NTC NiMn2O4-La1-xCaxMnO3 (0≤x≤0.3) Composite Ceramics

2013 ◽  
Vol 716 ◽  
pp. 78-83 ◽  
Author(s):  
Hui Min Zhang ◽  
Fang Guan ◽  
Ai Min Chang ◽  
Li Jun Zhao
Keyword(s):  
Electrical Resistivity ◽  
Perovskite Structure ◽  
Spinel Structure ◽  
Thermal Constant ◽  
Inrush Current ◽  
Composite Ceramics ◽  
Sem Images ◽  
Conventional Solid State Reaction ◽  
Different Temperatures ◽  
Xrd Patterns

Composite ceramics made of spinel structure NiMn2O4 and CaO-doped perovskite structure LaMnO3 were prepared by a conventional solid state reaction and sintered at different temperatures. The XRD patterns have shown that the major phases presented in the sintered samples are NiMn2O4 compounds with the spinel structure, La1-xCaxMnO3 with the perovskite structure and NiO with a monoclinic structure. SEM images show that the density and grain size of the composite ceramics increases with sintered temperature increasing. The electrical resistivity of the composite ceramics at 25°C is found to change significantly depending on the CaO content, while the thermal constant B is still reasonably large in the range of 2400 to 3000 K. For the composition x = 0.1, the composite with a low electrical resistivity (ρ25°C=4.46Ω·cm) and moderate B value (B25/50=2762K) was obtained. These composites could be applied as potential candidates for NTC thermistors in the suppression of the inrush current.

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