Journal ArticleDOI
Metal-Insulator Transition in LiTi2-xVxO4
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In this paper, the authors measured resistivity, Seebeck coefficient, and magnetic susceptibility for sintered pellets to see if a random distribution of Ti and V makes the oxide insulating.Abstract:
Resistivity, Seebeck coefficient, and the magnetic susceptibility were measured for the sintered pellets to see if a random distribution of Ti and V makes the oxide insulating The oxide seems to be an insulator in the composition range 08 1 It was a sum of the Pauli paramagnetic one of Ti 3+ electrons and the Curie-Weiss one of V 3+ electrons for x <1 A mechanism of the metal-insulator transition was discussedread more
Citations
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Journal ArticleDOI
Electronic structure of metallic oxides: Band-gap closure and valence control
TL;DR: An overview of photoemission and x-ray absorption studies on the electronic structure of 3D transition-metal and Bi oxides which show metal-insulator transitions as functions of chemical composition is presented in this paper.
Journal ArticleDOI
Orbital state and magnetic properties of LiV 2 O 4
I. A. Nekrasov,I. A. Nekrasov,Z. V. Pchelkina,Z. V. Pchelkina,Z. V. Pchelkina,G. Keller,Th. Pruschke,Karsten Held,A. Krimmel,Dieter Vollhardt,V. I. Anisimov,V. I. Anisimov +11 more
TL;DR: In this article, a combination of density functional theory within the local density approximation and dynamical mean-field theory (DMFT) is presented for the orbital state and magnetic properties of a transition metal oxides.
Journal ArticleDOI
Structural and electrical properties of Mg2TiO4
TL;DR: In this article, the structural and electrical properties of Mg2TiO4 inverse spinel using X-ray diffraction, Raman spectroscopy, ac conductivity and dielectric spectrographs were studied.
Journal ArticleDOI
Electrical and Magnetic Properties of Ca1-xLaxRuO3.
Takashi Sugiyama,Nobuo Tsuda +1 more
TL;DR: In this article, the electrical resistivity ρ and the magnetic susceptibility χ were measured for the sintered samples of Ca 1- x La x RuO 3 (0≦ x ≦1) (La x ) and Ca 1 - x Pr x Ru O 3 (x ≦0.2).
Journal ArticleDOI
Metal to semiconductor like transition for sintered Ca1−xNaxPd3O4
K. Itoh,Nobuo Tsuda +1 more
TL;DR: The resistivity ρ was measured for sintered Ca1−xNaxPd3O4, and a metal to nonmetal transition was found to occur at a composition between x=0.27 and 0.47 as discussed by the authors.
References
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Journal ArticleDOI
Effects of Double Exchange in Magnetic Crystals
TL;DR: In this article, it was shown that mobile electrons always give rise to a distortion of the ground state spin arrangement, since electron transfer lowers the energy by a term of first order in the distortion angles.
Journal ArticleDOI
Ferromagnetic compounds of manganese with perovskite structure
TL;DR: In this paper, the Curie temperature versus composition and saturation versus composition curves for mixed manganites with perovskite structures are given for LaMnO 3 CaMnNO 3, LaMmO 3 Ω(n 2 )n O(n 3 d )Mn 4+O(n 4 + O 3 2 2 ) and BaMn O 3 Ã 0, respectively.
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Superconducting and normal state properties of Li 1+x Ti 2−x O 4 spinel compounds. I. Preparation, crystallography, superconducting properties, electrical resistivity, dielectric behavior, and magnetic susceptibility
TL;DR: In this paper, the superconducting and normal state properties of LiTi 2====== O====== 4====== and other compositions within the homogeneity range of the spinel phase were characterized.
Journal ArticleDOI
Superconducting and normal state properties of Li 1+x Ti 2−x O 4 spinel compounds. II. Low-temperature heat capacity
TL;DR: In this paper, the authors reported that the disappearance of superconductivity for x≳0.1 was correlated with a rapid decrease in the normal-state linear heat capacity coefficient.