Metallization of La1/3NbO3 by lithium incorporation

Ayako Yamamoto; H. Uchiyama; S. Tajima

doi:10.1016/j.materresbull.2004.05.005

Metallization of La_1/3NbO₃ by lithium incorporation

Ayako Yamamoto, H. Uchiyama, S. Tajima

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6 Citations (Scopus)

Abstract

Lithium ion was successfully introduced into La_1/3NbO ₃ with an A-site-deficient perovskite-type structure. The crystal structure and transport properties of La_1/3Li_xNbO ₃ were investigated as a function of Li content (x = 0-0.59). The lattice parameters of La_1/3Li_xNbO₃ with an orthorhombic cell were enlarged with increasing Li content for x ≤ 0.3, and the structure was transformed to a pseudo-tetragonal cell for x = 0.44. The temperature dependence of electrical resistivity gradually changed from insulating to metallic with increasing x, and thermoelectric power measurement indicated that the carriers were electrons. In X-ray photoelectron spectra of the incorporated samples, Nb_3d ⁴⁺ peaks appeared in addition to Nb_3d ⁵⁺ peaks, which was consistent with the change of the transport properties. In spite of the success of metallization, no diamagnetic signal indicative of supercondcutivity was observed in La _1/3Li_0.59NbO₃ down to 1.8K.

Original language	English
Pages (from-to)	1691-1699
Number of pages	9
Journal	Materials Research Bulletin
Volume	39
Issue number	11
DOIs	https://doi.org/10.1016/j.materresbull.2004.05.005
Publication status	Published - 2004 Sep 1
Externally published	Yes

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Keywords

A. Oxides
C. Photoelectron spectroscopy
D. Crystal structure
D. Electrical properties

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

Yamamoto, A., Uchiyama, H., & Tajima, S. (2004). Metallization of La_1/3NbO₃ by lithium incorporation. Materials Research Bulletin, 39(11), 1691-1699. https://doi.org/10.1016/j.materresbull.2004.05.005

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abstract = "Lithium ion was successfully introduced into La1/3NbO 3 with an A-site-deficient perovskite-type structure. The crystal structure and transport properties of La1/3LixNbO 3 were investigated as a function of Li content (x = 0-0.59). The lattice parameters of La1/3LixNbO3 with an orthorhombic cell were enlarged with increasing Li content for x ≤ 0.3, and the structure was transformed to a pseudo-tetragonal cell for x = 0.44. The temperature dependence of electrical resistivity gradually changed from insulating to metallic with increasing x, and thermoelectric power measurement indicated that the carriers were electrons. In X-ray photoelectron spectra of the incorporated samples, Nb3d 4+ peaks appeared in addition to Nb3d 5+ peaks, which was consistent with the change of the transport properties. In spite of the success of metallization, no diamagnetic signal indicative of supercondcutivity was observed in La 1/3Li0.59NbO3 down to 1.8K.",

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N2 - Lithium ion was successfully introduced into La1/3NbO 3 with an A-site-deficient perovskite-type structure. The crystal structure and transport properties of La1/3LixNbO 3 were investigated as a function of Li content (x = 0-0.59). The lattice parameters of La1/3LixNbO3 with an orthorhombic cell were enlarged with increasing Li content for x ≤ 0.3, and the structure was transformed to a pseudo-tetragonal cell for x = 0.44. The temperature dependence of electrical resistivity gradually changed from insulating to metallic with increasing x, and thermoelectric power measurement indicated that the carriers were electrons. In X-ray photoelectron spectra of the incorporated samples, Nb3d 4+ peaks appeared in addition to Nb3d 5+ peaks, which was consistent with the change of the transport properties. In spite of the success of metallization, no diamagnetic signal indicative of supercondcutivity was observed in La 1/3Li0.59NbO3 down to 1.8K.

AB - Lithium ion was successfully introduced into La1/3NbO 3 with an A-site-deficient perovskite-type structure. The crystal structure and transport properties of La1/3LixNbO 3 were investigated as a function of Li content (x = 0-0.59). The lattice parameters of La1/3LixNbO3 with an orthorhombic cell were enlarged with increasing Li content for x ≤ 0.3, and the structure was transformed to a pseudo-tetragonal cell for x = 0.44. The temperature dependence of electrical resistivity gradually changed from insulating to metallic with increasing x, and thermoelectric power measurement indicated that the carriers were electrons. In X-ray photoelectron spectra of the incorporated samples, Nb3d 4+ peaks appeared in addition to Nb3d 5+ peaks, which was consistent with the change of the transport properties. In spite of the success of metallization, no diamagnetic signal indicative of supercondcutivity was observed in La 1/3Li0.59NbO3 down to 1.8K.

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KW - D. Electrical properties

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Access to Document

10.1016/j.materresbull.2004.05.005