Effect of disorder produced by cationic vacancies at theBsites on the electronic properties of mixed valence manganites

1999 ◽  
Vol 60 (2) ◽  
pp. 1127-1135 ◽  
Author(s):  
J. Vergara ◽  
R. J. Ortega-Hertogs ◽  
V. Madurga ◽  
F. Sapiña ◽  
Z. El-Fadli ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Mixed Valence ◽  
Effect Of Disorder ◽  
Mixed Valence Manganites

scholarly journals Electron Localization in Mixed-Valence Manganites

1995 ◽  
Vol 75 (21) ◽  
pp. 3910-3913 ◽  
Author(s):  
J. M. D. Coey ◽  
M. Viret ◽  
L. Ranno ◽  
K. Ounadjela
Keyword(s):  
Mixed Valence ◽  
Electron Localization ◽  
Mixed Valence Manganites

Modulation of Abnormal Poisson’s Ratios and Electronic Properties in Mixed-Valence Perovskite Manganite Films

2018 ◽  
Vol 10 (21) ◽  
pp. 18029-18035 ◽  
Author(s):  
Shanquan Chen ◽  
Changxin Guan ◽  
Shanming Ke ◽  
Xierong Zeng ◽  
Chuanwei Huang ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Mixed Valence ◽  
Perovskite Manganite ◽  
Poisson's Ratios ◽  
Poisson’S Ratios

A-Site Distribution in La1−xSrxMnO3: a Computational Study

2008 ◽  
Vol 1074 ◽  
Author(s):  
Yun Hee Jang ◽  
François Gervais ◽  
Yves Lansac
Keyword(s):  
Molecular Dynamics ◽  
Quantum Mechanics ◽  
Colossal Magnetoresistance ◽  
Computational Study ◽  
Mixed Valence ◽  
Magnetic Tunnel Junction ◽  
Md Simulations ◽  
Site Distribution ◽  
Mixed Valence Manganites ◽  
A Site

ABSTRACTThe possibility of an A-site (La3+/Sr2+) ordering in a colossal magnetoresistance manganite (CMR) La3/4Sr1/4MnO3 was explored using molecular dynamics (MD) simulations with a newly developed force field (FF) and quantum mechanics (QM) calculations on the structures obtained from MD. The calculated degrees of stabilization (enthalpy gain) of various patterns of A-site ordering are not significant enough to overcome the accompanying entropy loss, supporting the random A-site distribution in La3/4Sr1/4MnO3. This approach combining MD and QM as well as the versatile FF developed in this study should be useful to investigate the structures and functions of magnetic tunnel junction devices involving mixed-valence manganites.

Electronic Properties of some Ternary and Quaternary Oxides of the VIII B and I B Transition Elements: Application to High Tc Superconductivity

1989 ◽  
Vol 156 ◽  
Author(s):  
M. Pouchard ◽  
J-C. Grenier ◽  
J-P. Doumerc ◽  
G. Demazeau ◽  
J-P. Chaminade ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Structural Parameters ◽  
Mixed Valence ◽  
Oxidation States ◽  
Transition Elements ◽  
High Tc Superconductors ◽  
High Tc ◽  
Electronic Configurations ◽  
Spin Electronic ◽  
Mixed Valence Compounds

ABSTRACTIn the scope of the Goodenough model, a brief review of the electronic properties of some 3d transition elements (M = Fe, Co, Ni and Cu ) is given; the main relevant electronic and structural parameters are emphasized. Then a special attention is focussed on N/(N−1) and N/(N−2) electron mixed valence compounds.Finally some particular features of copper are discussed and their relevance to high Tc superconductors is pointed out:-the srong covalency of Cu-O bondings involving a possible delocalization of the hole between trivalent copper and oxygen,-the existence of low and high spin electronic configurations for CuIII,-the disproportionation of Cu2+ and its role in the formation of hole pairs,Cu-O distances very close for the three successive oxidation states of copper favouring the disproportionation process.

Magnetic frustration in mixed valence manganites

1997 ◽  
Vol 55 (2) ◽  
pp. R668-R671 ◽  
Author(s):  
J. L. García-Muñoz ◽  
J. Fontcuberta ◽  
B. Martínez ◽  
A. Seffar ◽  
S. Piñol ◽  
...  
Keyword(s):  
Mixed Valence ◽  
Magnetic Frustration ◽  
Mixed Valence Manganites

Monte Carlo simulation of magnetoresistance in double exchange mixed valence manganites

2018 ◽  
Vol 11 (77) ◽  
pp. 3827-3839 ◽  
Author(s):  
H. H. Ortiz-Alvarez ◽  
E. Restrepo-Parra ◽  
F. N. Jimenez-Garcia
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Mixed Valence ◽  
Double Exchange ◽  
Mixed Valence Manganites

Electronic properties of mixed valence oxide gels

1990 ◽  
Vol 121 (1-3) ◽  
pp. 35-39 ◽  
Author(s):  
J. Livage ◽  
J.P. Jolivet ◽  
E. Tronc
Keyword(s):  
Electronic Properties ◽  
Mixed Valence

ChemInform Abstract: Mixed-Valence Manganites

ChemInform ◽  
2010 ◽  
Vol 41 (43) ◽  
pp. no-no
Author(s):  
J. M. D. Coey ◽  
M. Viret ◽  
S. von Molnar
Keyword(s):  
Mixed Valence ◽  
Mixed Valence Manganites
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