ChemInform Abstract: Quaternary Chalcogenides Containing a Rare Earth and an Alkali- or Alkaline-Earth Metal

ChemInform ◽  
2010 ◽  
Vol 27 (6) ◽  
pp. no-no
Author(s):  
P. WU ◽  
J. A. IBERS
Keyword(s):  
Rare Earth ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Alkaline Earth Metal

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...

The Difference between Rare Earth Ions and Alkaline Earth Metal Ions in DNA Condensation Process

2011 ◽  
Vol 694 ◽  
pp. 613-615
Author(s):  
Jun Zhang ◽  
Xiao Ting Shi ◽  
Wei Guo ◽  
Zhong Zhang ◽  
Hong Yang
Keyword(s):  
Rare Earth ◽  
Metal Ions ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Dna Condensation ◽  
Rare Earth Ions ◽  
Alkaline Earth Metal ◽  
Condensation Process ◽  
Alkaline Earth Metal Ions ◽  
The Difference

The structural transition of DNA double-stranded induced by Ce3+ or Mg2+ ions was investigated in this paper. By atomic force microscopy, different types of condensed DNA structures were observed at the presence of Ce3+ or Mg2+ ions. The results show that there are some differences between rare earth ions and alkaline earth metal ions in the DNA condensation process.

scholarly journals The Effect of Substitution for La by Alkaline Earth Metal on the Thermoelectric Property of Rare Earth Chalcogenide La3S4.

1995 ◽  
Vol 42 (11) ◽  
pp. 1333-1337
Author(s):  
Shigeru Katsuyama ◽  
Yoshiyuki Tanaka ◽  
Yoichi Shichijo ◽  
Kazuhiko Majima ◽  
Hiroshi Nagai
Keyword(s):  
Rare Earth ◽  
Thermoelectric Property ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Alkaline Earth Metal

Lanthanum tetrazinc, LaZn4

2012 ◽  
Vol 68 (6) ◽  
pp. i37-i40 ◽  
Author(s):  
Igor Oshchapovsky ◽  
Volodymyr Pavlyuk ◽  
Grygoriy Dmytriv ◽  
Alexandra Griffin
Keyword(s):  
Rare Earth ◽  
Diffraction Data ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Structure Type ◽  
Alkaline Earth Metal ◽  
X Ray Diffraction ◽  
X Ray ◽  
A Site ◽  
First Time

The structure of lanthanum tetrazinc, LaZn4, has been determined from single-crystal X-ray diffraction data for the first time, approximately 70 years after its discovery. The compound exhibits a new structure type in the space groupCmcm, with one La atom and two Zn atoms occupying sites withm2msymmetry, and one Zn atom occupying a site with 2.. symmetry. The structure is closely related to the BaAl4, La3Al11, BaNi2Si2and CaCu5structure types, which can be presented as close-packed arrangements of 18-vertex clusters, in this case LaZn18. The kindred structure types contain related 18-vertex clusters around atoms of the rare earth or alkaline earth metal.

PolyDis: simple quantification tool for distortion of polyhedra in crystalline solids

2019 ◽  
Vol 234 (3) ◽  
pp. 201-209 ◽  
Author(s):  
Dominik Stoiber ◽  
Rainer Niewa
Keyword(s):  
Rare Earth ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Simple Approach ◽  
Alkaline Earth Metal ◽  
Complex Structures ◽  
Temperature Dependent ◽  
Mathematical Basis ◽  
Coordination Polyhedra ◽  
The Ideal

Abstract A new simple approach to quantitative measures of coordination polyhedra distortions from ideal symmetry is provided with PolyDis. Within the mathematical basis, it minimizes the normalized displacements of given polyhedra to the ideal shape. Applications are discussed, where PolyDis was used to analyze the temperature dependent distortion of LaAlO3, rare earth metal radius dependent distortion of RMnO3 and the increasing structural distortion of (A3N)As with varying alkaline earth metal, all being perovskites. Additionally, the more complex structures of SrCuRSe3 and CsCu3R2Se5 comprising trigonal prisms, octahedra and tetrahedra are treated with PolyDis.

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