Journal ArticleDOI
Synthesis and properties of NdNiO3 prepared by low-temperature methods
TLDR
In this article, a rhombohedral perovskite structure of NdNiO{sub 3] has been prepared with a low-temperature method, and its magnetic and electric properties have been studied between 4 and 300 K.About:
This article is published in Journal of Solid State Chemistry.The article was published on 1989-08-01. It has received 96 citations till now. The article focuses on the topics: Electrical resistivity and conductivity & Atmospheric temperature range.read more
Citations
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Structural, magnetic and electronic properties of perovskites (R = rare earth)
TL;DR: A summary of the scientific work performed on the system during the last 6 years is presented in this paper, with special emphasis on the relationship between the structural and the physical properties, and possible mechanisms responsible for the metal-insulator transition, which is the major open question for perovskites, are also discussed.
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Synthesis, crystal structure, and properties of metallic PrNiO3: Comparison with metallic NdNiO3 and semiconducting SmNiO3
TL;DR: In this paper, the electrical conductivity of PrNiO3 is shown to be metallic at room temperature, but undergoes a transition at 130 K to an insulating state, with a ∼ 0.2% contraction upon heating into the metallic state.
Journal ArticleDOI
Magnetic and Optical Properties of γ-Fe2O3 Nanocrystals
John K. Vassiliou,Vivek Mehrotra,Michael W. Russell,Emmanuel P. Giannelis,Robert D. McMichael,Robert D. Shull,Ronald F. Ziolo +6 more
TL;DR: In this article, the optical absorption edge is red shifted with respect to that of an epitaxially grown single-crystal film of γ-Fe2O3, attributed to lattice strain in the small particles.
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Origins of bad-metal conductivity and the insulator-metal transition in the rare-earth nickelates
TL;DR: A study of disordered rare-earth nickelates as mentioned in this paper provides microscopic insights into bad-metal behaviour, such as the copper oxide superconductors, and their origin of their poor conductivity is unclear.
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Synthesis, Structure, and Properties of Anti-perovskite Nitrides Ca3MN, M=P,As,Sb,Bi,Ge,Sn, and Pb
TL;DR: A family of anti-perovskite nitrides of the formula Ca3MN, where M is a Group IV or a Group V element is reported in this paper.
References
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Metal-insulator transitions
TL;DR: In this article, a discussion is given of some aspects of the metal insulator transition and the status of the "minimum metallic conductivity" is discussed, and the concept is valid for liquids and in some, but not all, solid systems.
Journal ArticleDOI
Geometrical and structural relations in the rhombohedral perovskites
H. D. Megaw,C. N. W. Darlington +1 more
TL;DR: In this paper, a correlation between the tilt angle ω and a flattening of the octahedron is found, and some tentative suggestions are made as to its cause.
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Sur une série de composés oxygènes du nickel trivalent derivés de la perovskite
TL;DR: In this paper, le caractere metallique de la phase LaNiO3 and l'etat de spin faible du nickel trivalent was investigated. But, le caractoré metalliques de La NiO3 was not satisfied.
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Rare Earth Nickel Oxides
TL;DR: In this article, a trivalent version of LaNi03, containing nickel (II) oxide, was prepared and its structure studied by X-ray diffraction methods, and all the lines of the diffraction patterns out to 2 theta = 75 degrees could be indexed satisfactorily on the basis of a monoclinic unit cell with a = 3.92 A.
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Coexistence of localized and itinerant d electrons
TL;DR: In this article, the coexistence of localized and itinerant d electrons at an array of equivalent transition-metal cations is argued for LaRuO3, high-temperature LaCoO3 and CrO2 and FeS, all of which contain an integral number of d electrons per cation.