Journal ArticleDOI
Single-Crystal Growth of Perovskite-Type La1-xSrxMO3 (M=Fe, Co) Solid Solutions
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In this article, single crystals of the perovskite-type solid solutions La1-xSrxFeO3 with x=0.1, 0.2 and 0.3 were grown by the floating-zone method using an Xe arc-lamp imaging furnace.Abstract:
Single crystals of the perovskite-type solid solutions La1-xSrxFeO3 with x=0.0, 0.1, 0.25 and 0.4 and La1-xSrxCoO3 with x=0.0, 0.02 and 0.1 were grown by the floating-zone method using an Xe arc-lamp imaging furnace. Under the optimum conditions, single crystals about 5 mm in diameter and 40 mm in length were obtained. High-power X-ray diffraction analysis, optical microscopy and SEM-XMA showed the crystals to consist of a single phase and the distribution of the metal elements to be uniform. Preparation of raw material with precise composition was crucial for the synthesis of the single crystals. In the case of La1-xSrxCoO3 with x=0.2 and 0.3, CoO and a K2NiF4-type (La1-ySry)2CoO4 phase were observed in the perovskite-type solid solutions.read more
Citations
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Nonstoichiometry of the perovskite-type oxides La1−xSrxCoO3−δ
TL;DR: In this article, thermogravimetric measurements were made in the range 10 −5 ≤ P( O 2 ) atm ≤ 1 and 300 ≤ T °C ≤ 1000, where the solid solution was stable as a single-phase perovskite-type oxide.
Journal ArticleDOI
Nonstoichiometry and defect structure of the perovskite-type oxides La1−xSrxFeO3−°
TL;DR: In this paper, the defect structure of perovskite-type oxide solid solution La1−xSrxFeO3−δ (x = 0.015) was measured as a function of oxygen partial pressure, PO2, at temperatures up to 1200°C by means of the thermogravimetric method.
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Diffusion of oxide ion vacancies in perovskite-type oxides
TL;DR: In this article, the tracer diffusion coefficient of oxide ions, D∗ O, in La 1− x Sr x CoO 3− δ ( x = 0.1) and La 1 − x Srs x M O 3−δ ( M = Co, Fe) was determined.
Journal ArticleDOI
Nonstoichiometry, diffusion, and electrical properties of perovskite-type oxide electrode materials
TL;DR: In this paper, the relationship between nonstoichiometry, electrical properties and diffusion of perovskite-type oxides, ABO3 (B = Al, Zr, Bi, Cr, Mn, Fe, Co), was reviewed to elucidate the characteristics of pervskite type electrode materials, La1-xSrxBO3.
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Extensive study of the optical spectra for high-temperature superconducting oxides and their related materials from the infrared to the vacuum-ultraviolet energy region
Setsuko Tajima,H. Ishii,T. Nakahashi,Toshiyuki Takagi,S. Uchida,M. Seki,Shigemasa Suga,Yoshikazu Hidaka,M. Suzuki,T. Murakami,K. Oka,H. Unoki +11 more
TL;DR: In this paper, the authors measured the reflectivity spectra of cuprate superconductors and estimated the charge transfer energy to be 2.4 eV for both cuprates.
References
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Book reviewA text-book of quantitative inorganic analysis: A. I. Vogel: (including elementary instrumental analysis). 3rd Ed. Longmans, Green, London, 1962. Pp.xxx + 1216 70s.
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Catalytic Properties of Perovskite-type Mixed Oxides, La1−xSrxCoO3
TL;DR: In this paper, the reactivity and related properties of oxygen both in the bulk and on the surface has been investigated for perovskite-type mixed oxides (La1−xSrxCoO3), in regard to the effects of Sr2+-substitution and calcination temperature.
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Martensitic Transformation in La1-xSrxCoO3
TL;DR: In this article, a multiple twin structure was found in single crystals of La1-xSrxCoO3 (x=0.0, 0.02 and 0.1) by means of an optical microscope and SEM.