PHOTOELECTRON SPECTROSCOPIC STUDY OF SRXNBO3

被引：33

作者：

ISAWA, K

ITTI, R

SUGIYAMA, J

KOSHIZUKA, N

YAMAUCHI, H

机构：

[1] Superconductivity Research Laboratory, International Superconductivity Technology Center, Koto-ku, Tokyo 135

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.49.3534

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

X-ray and ultraviolet photoelectron spectroscopic (XPS and UPS) data were obtained for SrxNbO3 (x = 0.8,0.85,0.9). The valency of the Nb ion was found to be between pentavalent and tetravalent. No shifts of the XPS core-level spectra, such as O 1s, Sr 3p, and Sr 3d, were observed in this system even when x was varied. For all samples, sharp Fermi edges were observed with He I (21.2 eV) photon excitation. The results indicate that this valence band was mainly caused by the hybridization between the O 2p and Nb 4d orbitals, as had been proposed for the tungsten bronze by Goodenough. Eu substituted samples, (Sr,Eu)(0.9)NbO3, were also studied. An additional sharp peak, due to Eu 4f state, was clearly observed in the valence-band region close to the Fermi level.

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页码：3534 / 3538

页数：5

相关论文

共 24 条

[1] EFFECT OF OXYGEN VACANCIES ON ELECTRONIC STATES OF CAVO3-DELTA AND SRVO3-DELTA - A PHOTOEMISSION-STUDY [J].

AIURA, Y ;

IGA, F ;

NISHIHARA, Y ;

OHNUKI, H ;

KATO, H .

PHYSICAL REVIEW B, 1993, 47 (11) :6732-6735

[2] NONSUPERCONDUCTING BASN1-XSBXO3 - THE 5S-ORBITAL ANALOG OF BAPB1-XBIXO3 [J].

CAVA, RJ ;

GAMMEL, P ;

BATLOGG, B ;

KRAJEWSKI, JJ ;

PECK, WF ;

RUPP, LW ;

FELDER, R ;

VANDOVER, RB .

PHYSICAL REVIEW B, 1990, 42 (07) :4815-4818

[3] ELECTRICAL AND MAGNETIC-PROPERTIES OF NB2O5-DELTA CRYSTALLOGRAPHIC SHEAR STRUCTURES [J].

CAVA, RJ ;

BATLOGG, B ;

KRAJEWSKI, JJ ;

POULSEN, HF ;

GAMMEL, P ;

PECK, WF ;

RUPP, LW .

PHYSICAL REVIEW B, 1991, 44 (13) :6973-6981

[4] ALKALINE-EARTH VANADIUM (IV) OXIDES HAVING AVO3 COMPOSITION [J].

CHAMBERL.BL ;

DANIELSO.PS .

JOURNAL OF SOLID STATE CHEMISTRY, 1971, 3 (02) :243-&

[5] ELECTRONIC-STRUCTURE OF BASN1-XSBXO3 STUDIED BY PHOTOEMISSION SPECTROSCOPY [J].

CLAESSEN, R ;

SMITH, MG ;

GOODENOUGH, JB ;

ALLEN, JW .

PHYSICAL REVIEW B, 1993, 47 (04) :1788-1793

[6] EVOLUTION OF THE SPECTRAL-FUNCTION IN MOTT-HUBBARD SYSTEMS WITH D(1) CONFIGURATION [J].

FUJIMORI, A ;

HASE, I ;

NAMATAME, H ;

FUJISHIMA, Y ;

TOKURA, Y ;

EISAKI, H ;

UCHIDA, S ;

TAKEGAHARA, K ;

DEGROOT, FMF .

PHYSICAL REVIEW LETTERS, 1992, 69 (12) :1796-1799

[7]

Goodenough J., 1971, PROG SOLID STATE CH, V5, P145, DOI DOI 10.1016/0079-6786(71)90018-5

[8] ELECTRONIC-STRUCTURE OF HIGH-TC BA0.6K0.4BIO3 BY X-RAY PHOTOELECTRON-SPECTROSCOPY [J].

HEGDE, MS ;

BARBOUX, P ;

CHANG, CC ;

TARASCON, JM ;

VENKATESAN, T ;

WU, XD ;

INAM, A .

PHYSICAL REVIEW B, 1989, 39 (07) :4752-4755

[9] CRYSTALLIZATION OF REDUCED STRONTIUM AND BARIUM NIOBATE PEROVSKITES FROM BORATE FLUXES [J].

HESSEN, B ;

SUNSHINE, SA ;

SIEGRIST, T ;

JIMENEZ, R .

MATERIALS RESEARCH BULLETIN, 1991, 26 (01) :85-90

[10] SYNTHESIS AND TRANSPORT-PROPERTIES OF SRXNBO3 (0.75-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-0.90) [J].

ISAWA, K ;

SUGIYAMA, J ;

MATSUURA, K ;

NOZAKI, A ;

YAMAUCHI, H .

PHYSICAL REVIEW B, 1993, 47 (05) :2849-2853