Effect of sintering conditions on the microstructural, dielectric, ferroelectric and varistor properties of CaCu3Ti4O12 and La2/3Cu3Ti4O12 ceramics belonging to the high and low dielectric constant members of ACu3M4O12 (A=alkali, alkaline-earth metal, rare-earth metal or vacancy, M=transition metal) family of oxides

2008 ◽  
Vol 403 (13-16) ◽  
pp. 2246-2254 ◽  
Author(s):  
B. Shri Prakash ◽  
K.B.R. Varma
Keyword(s):  
Dielectric Constant ◽  
Rare Earth ◽  
Transition Metal ◽  
Rare Earth Metal ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Low Dielectric Constant ◽  
Alkaline Earth Metal ◽  
Low Dielectric ◽  
Sintering Conditions

“Flat/steep band model” for superconductors containing Bi square nets

2020 ◽  
Vol 75 (1-2) ◽  
pp. 183-190
Author(s):  
Juntao Fu ◽  
Jing Xu ◽  
Jing Lin ◽  
Jürgen Köhler ◽  
Shuiquan Deng
Keyword(s):  
Rare Earth ◽  
Transition Metal ◽  
Fermi Level ◽  
Electronic Structures ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Dirac Fermion ◽  
Alkaline Earth Metal ◽  
Band Model ◽  
New Family

AbstractThe crystal structures of a new family of superconductors containing a Bi square net and their electronic structures around the Fermi level have been reviewed. The structures of these compounds can be viewed as stacked layers denoted by [Bi][(RE)(M2Bi2)(RE)] RE = rare earth or alkaline earth metal, M = transition metal. Flat/steep band features are shown to exist in all these new superconductors, though the pairing mechanisms may be very different. The Dirac Fermion behavior is reviewed and its implications are discussed.

scholarly journals Increased hole mobility in anti-ThCr2Si2-type La2O2Bi co-sintered with alkaline earth metal oxides for oxygen intercalation and hole carrier doping

2021 ◽  
Author(s):  
Kota Matsumoto ◽  
Hideyuki Kawasoko ◽  
Noriaki Kimura ◽  
Tomoteru Fukumura
Keyword(s):  
Rare Earth ◽  
Metal Oxides ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Hole Mobility ◽  
Alkaline Earth Metal ◽  
Alkaline Earth Metal Oxides ◽  
Oxygen Intercalation ◽  
Axis Length ◽  
Carrier Doping

Metallic anti-ThCr2Si2-type RE2O2Bi (RE = rare earth) with Bi square nets show superconductivity while insulating La2O2Bi shows high hole mobility, by expanding the c-axis length through oxygen intercalation. In this...

OxygenKx-ray-absorption near-edge structure of alkaline-earth-metal and 3d-transition-metal oxides

1987 ◽  
Vol 36 (17) ◽  
pp. 9241-9246 ◽  
Author(s):  
Shun-ichi Nakai ◽  
Tsutomu Mitsuishi ◽  
Hidenao Sugawara ◽  
Hideki Maezawa ◽  
Tokuo Matsukawa ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Alkaline Earth Metal ◽  
Edge Structure
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