scholarly journals Negative thermal expansion in high pressure layered perovskite Ca2GeO4

2019 ◽  
Vol 55 (20) ◽  
pp. 2984-2987 ◽  
Author(s):  
Wei-Tin Chen ◽  
Chris Ablitt ◽  
Nicholas C. Bristowe ◽  
Arash A. Mostofi ◽  
Takashi Saito ◽  
...  
Keyword(s):  
High Pressure ◽  
Thermal Expansion ◽  
Negative Thermal Expansion ◽  
Layered Perovskite ◽  
High Pressure Synthesis ◽  
Pressure Synthesis

We report the high pressure synthesis of a layered perovskite Ca2GeO4 which is found to have the Ruddlesden–Popper structure with I41/acd symmetry, and to display pronounced uniaxial negative thermal expansion.

scholarly journals High-pressure synthesis of Ba2RhO4 , a rhodate analog of the layered perovskite Sr-ruthenate

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
I. Kurata ◽  
José A. Flores-Livas ◽  
H. Sugimoto ◽  
H. Takahashi ◽  
H. Sagayama ◽  
...  
Keyword(s):  
High Pressure ◽  
Layered Perovskite ◽  
High Pressure Synthesis ◽  
Pressure Synthesis

scholarly journals Adjustable thermal expansion in La(Fe, Si)13-based conductive composites by high-pressure synthesis

2019 ◽  
Vol 29 (1) ◽  
pp. 28-31
Author(s):  
Wei Wang ◽  
Rongjin Huang ◽  
Yi Shan ◽  
Yuqiang Zhao ◽  
Xinran Shan ◽  
...  
Keyword(s):  
High Pressure ◽  
Thermal Expansion ◽  
High Pressure Synthesis ◽  
Conductive Composites ◽  
Pressure Synthesis

scholarly journals High-pressure synthesis and physical properties of A-site ordered perovskites

2014 ◽  
Vol 70 (a1) ◽  
pp. C755-C755
Author(s):  
Youwen Long
Keyword(s):  
High Pressure ◽  
Transition Metal ◽  
Physical Properties ◽  
Colossal Magnetoresistance ◽  
Research Work ◽  
Negative Thermal Expansion ◽  
Transition Metal Ions ◽  
High Pressure Synthesis ◽  
Pressure Synthesis ◽  
A Site

ABO3-type perovskite oxides exhibit a wide variety of interesting physical properties such as superconductivity, colossal magnetoresistance, multiferroic behavior etc. For a simple ABO3 perovskite, if three quarters of the A site is replaced by a transition metal A', then the so-called A-site ordered double perovskite with the chemical formula of AA'3B4O12 can form. Since both A' and B sites accommodate transition metal ions, in addition to conventional B-B interaction, the new A'-A' and/or A'-B interaction is possible to show up, giving rise to the presence of many novel physical properties. Here we will show our recent research work on the high-pressure synthesis of several A-site ordered perovskites as well as a series of interesting physical properties like temperature- and pressure-induced intermetallic charge transfer, negative thermal expansion, magnetoelectric coupling multiferroic and so on. [1-3]

High-Pressure Synthesis, Crystal Structure, and Magnetic Properties of Sr2MnO3F: A New Member of Layered Perovskite Oxyfluorides

2016 ◽  
Vol 55 (5) ◽  
pp. 2627-2633 ◽  
Author(s):  
Yu Su ◽  
Yoshihiro Tsujimoto ◽  
Yoshitaka Matsushita ◽  
Yahua Yuan ◽  
Jianfeng He ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Magnetic Properties ◽  
Layered Perovskite ◽  
High Pressure Synthesis ◽  
Pressure Synthesis

An effective method for elimination of the defects in diamond caused by physical field asymmetry in high-pressure synthesis cavities

CrystEngComm ◽  
2020 ◽  
Vol 22 (47) ◽  
pp. 8266-8273
Author(s):  
Chunxiao Wang ◽  
Hong-an Ma ◽  
Liangchao Chen ◽  
Shuai Fang ◽  
Jian Wang ◽  
...  
Keyword(s):  
High Pressure ◽  
Physical Field ◽  
Diamond Growth ◽  
High Pressure Synthesis ◽  
Growth Defects ◽  
Pressure Synthesis

FEM was used to explain the mechanism of diamond growth defects and methods were proposed to eliminate the growth defects.

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