CORRELATION BETWEEN TC AND EU LATTICE VIBRATION IN T'-PHASE SUPERCONDUCTOR (LA1-XEUX)2-YCEYCUO4-DELTA OBSERVED BY EU-151 MOSSBAUER-EFFECT

被引：13

作者：

ITOH, H ^{[1
]}

KUSUHASHI, M ^{[1
]}

TANIWAKI, M ^{[1
]}

机构：

[1] HOKKAIDO UNIV, FAC ENGN, DEPT ELECTR ENGN, SAPPORO, HOKKAIDO 060, JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1990年 / 29卷 / 09期

关键词：

(La[!sub]1-x[!/sub]Euxl[!sub]2-y[!/sub]CeyCu0[!sub]4-6[!/sub; !sup]151[!/sup]Eu Mossbauer effect; Debye temperature; High- Tc superconductor; Isomer shift; Lattice vibration; T'; -phase; lattice constant; Tc enhancement;

D O I：

10.1143/JJAP.29.L1604

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electronic state and lattice vibration of Eu in T'-phase (La1-xEux)2-yCeyO4-δ was studied by 151Eu Mössbauer effect. The isomer shift and the Debye temperature of Eu, \varThetaD, showed that Eu is trivalent, and the Eu-O distance is larger than those in the hole-doped superconductors. With increasing Eu concentration, in spite of the shortening of the lattice constants, \varThetaD in T'-phase decreased. This is probably caused by the increase in the Eu-O distance with the change of Eu-O-La bonding into Eu-O-Eu bonding. A tight correlation between Tc and \varThetaD was found and the relation, Tc=0.772\varThetaD exp (-\varThetaD2/13000), was derived. © 1990 The Japan Society of Applied Physics.

引用

页码：L1604 / L1607

页数：4

共 21 条

[1] SUPERCONDUCTING EUBA2CU3O7 - A MOSSBAUER STUDY [J].

COEY, JMD ;

DONNELLY, K .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1987, 67 (04) :513-516

[2] RARE-EARTH VALENCY AND ELECTRIC-FIELD IN EU, GD AND YB BASED HIGH-TC SUPERCONDUCTORS [J].

DEREOTIER, PD ;

VULLIET, P ;

YAOUANC, A ;

CHAUDOUET, P ;

GARCON, S ;

SENATEUR, JP ;

WEISS, F ;

ASCH, L ;

KALVIUS, GM .

PHYSICA C, 1988, 153 :1543-1544

[3]

GRANDJEAN F, 1990, MOSSBAUER SPECTROSCO, V13, P518

[4] SYNTHESIS AND X-RAY CHARACTERIZATION OF SUPERCONDUCTING AND RELATED ND2-XCEXCUO4-Y GD2-XCEXCUO4-Y COMPOUNDS [J].

HUANG, TC ;

MORAN, E ;

NAZZAL, AI ;

TORRANCE, JB .

PHYSICA C, 1989, 158 (1-2) :148-152

[5] CRYSTAL-STRUCTURE OF THE ORTHORHOMBIC FORM OF BA2YCU3O7-X AT 42-K [J].

IZUMI, F ;

ASANO, H ;

ISHIGAKI, T ;

TAKAYAMAMUROMACHI, E ;

UCHIDA, Y ;

WATANABE, N .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1987, 26 (07) :L1193-L1196

[6] NEUTRON AND ELECTRON-DIFFRACTION STUDY OF THE ELECTRON-DOPED SUPERCONDUCTOR ND1.845CE0.155CUO4-Y [J].

IZUMI, F ;

MATSUI, Y ;

TAKAGI, H ;

UCHIDA, S ;

TOKURA, Y ;

ASANO, H .

PHYSICA C, 1989, 158 (03) :433-439

[7] METAL ORDERING AND OXYGEN DISPLACEMENTS IN (ND, SR, CE)2CUO4-Y [J].

IZUMI, F ;

TAKAYAMAMUROMACHI, E ;

FUJIMORI, A ;

KAMIYAMA, T ;

ASANO, H ;

AKIMITSU, J ;

SAWA, H .

PHYSICA C, 1989, 158 (03) :440-448

[8] TRANSITION TEMPERATURE OF STRONG-COUPLED SUPERCONDUCTORS [J].

MCMILLAN, WL .

PHYSICAL REVIEW, 1968, 167 (02) :331-&

[9]

MURAKI T, 1990, ADV SUPERCONDUCTIVIT, V2, P563

[10] RELATION BETWEEN TC AND CU-O BOND LENGTH WITHIN THE BASAL-PLANE OF CE0.15ND1.85-XMXCUO4-Y (M=LA AND SM) AND CE0.15PR1.85CUO4-Y [J].

OHISHI, K ;

SYONO, Y ;

KIKUCHI, M ;

KOBAYASHI, N ;

MUTO, Y .

SOLID STATE COMMUNICATIONS, 1990, 73 (05) :341-343

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