Observation of itinerant ferromagnetism and coupled magnetoresistance in a spinel CuCo2S4

2021 ◽  
Author(s):  
zengji Yue ◽  
Peng Liu ◽  
Zhiqian Hou ◽  
Frank Yun ◽  
Guangsai Yang ◽  
...  
Keyword(s):  
High Temperature ◽  
Electronic Transport ◽  
Itinerant Ferromagnetism ◽  
Metallic Conductivity ◽  
Positive Magnetoresistance

We report the existence of ferromagnetism in the thiospinel compound CuCo2S4 with Tc ~125K. The magneto-electronic transport of the CuCo2S4 demonstrates a metallic conductivity and positive magnetoresistance at high temperature....

scholarly journals Linear and electronic transport in strongly coupled binary ionic mixtures

1990 ◽  
Vol 8 (4) ◽  
pp. 781-791
Author(s):  
D. Léger ◽  
C. Deutsch
Keyword(s):  
High Temperature ◽  
Transport Properties ◽  
Electronic Transport ◽  
Systematic Investigation ◽  
Coulomb Interactions ◽  
Strongly Coupled ◽  
Linear Transport ◽  
Basic Formalism ◽  
Ionic Mixtures

This paper is devoted to a systematic investigation of linear transport properties in strongly coupled binary ionic mixtures of pointlike ions interacting solely through Coulomb interactions. The basic formalism rests upon suitable extensions of the Boltzmann–Ziman equation explained in this work. Validity conditions for the Lorentzian approximation are thoroughly discussed as well as entropy arguments. High temperature inelastic contributions are emphasized out.

Dual nature of high-temperature electronic transport in layered perovskite-like cobaltites: exhaustive consideration of experimental features observed

2022 ◽  
Author(s):  
B. V. Politov ◽  
A. Yu. Suntsov
Keyword(s):  
High Temperature ◽  
General Formula ◽  
Electronic Transport ◽  
Complex Oxides ◽  
Layered Perovskite ◽  
Dual Nature ◽  
High Temperature Electronic

Complex oxides with the general formula Pr1−xYxBaCo2−yNiyO6−δ (x = 0, 0.1, y = 0, 0.2) were successfully synthesized via combustion of organo-metallic precursors.

scholarly journals Decoupled phononic-electronic transport in multi-phase n-type half-Heusler nanocomposites enabling efficient high temperature power generation

2020 ◽  
Vol 36 ◽  
pp. 63-72 ◽  
Author(s):  
Han Byul Kang ◽  
Bed Poudel ◽  
Wenjie Li ◽  
Heonjoong Lee ◽  
Udara Saparamadu ◽  
...  
Keyword(s):  
Power Generation ◽  
High Temperature ◽  
Electronic Transport ◽  
Multi Phase

scholarly journals Thermodynamic, Electromagnetic, and Lattice Properties of Antiperovskite Mn3SbN

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Ying Sun ◽  
Yan-Feng Guo ◽  
Yoshihiro Tsujimoto ◽  
Xia Wang ◽  
Jun Li ◽  
...  
Keyword(s):  
Heat Capacity ◽  
High Temperature ◽  
Electronic Transport ◽  
Room Temperature ◽  
Lattice Distortion ◽  
Entropy Change ◽  
Temperature Curve ◽  
Tetragonal Structure ◽  
Cubic Structure ◽  
Transition Entropy

The physical properties of polycrystalline Mn3SbN were investigated using measurements of the magnetic, calorimetric, and electronic transport properties. At room temperature, the phase crystallizes in a tetragonal structure withP4/mmmsymmetry. A remarkably sharp peak in the heat capacity versus temperature curve was found near 353 K. The peak reaches 723 J mol−1 K−1at its highest, which corresponds to a transition entropy of 10.2 J mol−1 K−1. The majority of the large entropy change appears to be due to lattice distortion from the high-temperature cubic structure to the room-temperature tetragonal structure and the accompanying Ferrimagnetic transition.

scholarly journals Guidelines to design multicomponent ferrospinels for high-temperature applications

RSC Advances ◽  
2016 ◽  
Vol 6 (39) ◽  
pp. 32540-32548 ◽  
Author(s):  
N. M. Ferreira ◽  
M. C. Ferro ◽  
S. M. Mikhalev ◽  
F. M. Costa ◽  
J. R. Frade ◽  
...  
Keyword(s):  
High Temperature ◽  
Transition Metal ◽  
Electronic Transport ◽  
Metal Cations ◽  
Redox Behavior ◽  
Transition Metal Cations ◽  
Temperature Applications

This work explores the possibilities to design magnetite-based spinels through multiple simultaneous co-substitutions with transition metal cations, with emphasis on redox behavior and electronic transport.

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