GROWTH OF YBA2CU3O7-X CRYSTALS IN THORIA CRUCIBLES - TWINNING AND OPTICAL EFFECTS

被引：29

作者：

GAGNON, R ^{[1
]}

OUSSENA, M ^{[1
]}

AUBIN, M ^{[1
]}

机构：

[1] UNIV SHERBROOKE, CTR RECH PHYS SOLIDE, SHERBROOKE J1K 2R1, QUEBEC, CANADA

来源：

JOURNAL OF CRYSTAL GROWTH | 1992年 / 121卷 / 04期

关键词：

D O I：

10.1016/0022-0248(92)90562-W

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

YBa2Cu3O7-x crystals with reasonable dimensions(3x2x1 mm3) were obtained in a ThO2 crucible by combining the use of a temperature gradient with the flux growth technique. The contamination by Th is found to be very low since T(c) is 92 K, as observed by a thermoelectric power measurement. Color photographs are presented of optical diffraction effects obtained with white light incident on the crystal surface and related to the twinning in the a-b plane. These effects are completely different from the variety of optical effects reported in the literature. Growth spirals were observed on the a-b surface by SEM with step heights of 5-8 times the c-axis parameter, as measured with a profile-meter.

引用

页码：559 / 565

页数：7

共 35 条

[1] SINGLE-CRYSTAL GROWTH AND LOW-FIELD AC MAGNETIC SUSCEPTOMETRY OF YBA2CU3O7-DELTA, ERBA2CU3O7-DELTA, AND BI2SR2CA0.8CU2O8 SUPERCONDUCTORS [J].

CISZEK, TF ;

EVANS, CD .

JOURNAL OF CRYSTAL GROWTH, 1991, 109 (1-4) :418-425

[2] THERMOELECTRIC-POWER OF YBA2CU3O7-DELTA - PHONON DRAG AND MULTIBAND CONDUCTION [J].

COHN, JL ;

WOLF, SA ;

SELVAMANICKAM, V ;

SALAMA, K .

PHYSICAL REVIEW LETTERS, 1991, 66 (08) :1098-1101

[3] GROWTH OF SINGLE-CRYSTALS OF YBA2CU3O7 [J].

DAS, BN ;

TOTH, LE ;

SINGH, AK ;

BENDER, B ;

OSOFSKY, M ;

PANDE, CS ;

KOON, NC ;

WOLF, S .

JOURNAL OF CRYSTAL GROWTH, 1987, 85 (04) :588-592

[4] THE INFLUENCE OF DISLOCATIONS ON CRYSTAL GROWTH [J].

FRANK, FC .

DISCUSSIONS OF THE FARADAY SOCIETY, 1949, (05) :48-54

[5] DIRECT MEASUREMENT OF THE ANISOTROPY OF THE RESISTIVITY IN THE A-B PLANE OF TWIN-FREE, SINGLE-CRYSTAL, SUPERCONDUCTING YBA2CU3O7-DELTA [J].

FRIEDMANN, TA ;

RABIN, MW ;

GIAPINTZAKIS, J ;

RICE, JP ;

GINSBERG, DM .

PHYSICAL REVIEW B, 1990, 42 (10) :6217-6221

[6] GROWTH OF LARGE YBA2CU3O7-X CRYSTALS IN THE PRESENCE OF A TEMPERATURE-GRADIENT [J].

GAGNON, R ;

OUSSENA, M ;

AUBIN, M .

JOURNAL OF CRYSTAL GROWTH, 1991, 114 (1-2) :186-190

[7] SUPERCONDUCTIVITY IN SULFUR-CONTAINING R-BA-CU-O COMPOUNDS [J].

GAGNON, R ;

FOURNIER, P ;

AUBIN, M ;

OREILLY, AH ;

GREEDAN, JE .

PHYSICAL REVIEW B, 1989, 39 (16) :11498-11502

[8] SCREW DISLOCATIONS IN HIGH-TC FILMS [J].

GERBER, C ;

ANSELMETTI, D ;

BEDNORZ, JG ;

MANNHART, J ;

SCHLOM, DG .

NATURE, 1991, 350 (6316) :279-280

[9] A METHOD FOR OBTAINING SINGLE DOMAIN SUPERCONDUCTING YBA2CU3O7-X SINGLE-CRYSTALS [J].

GIAPINTZAKIS, J ;

GINSBERG, DM ;

HAN, PD .

JOURNAL OF LOW TEMPERATURE PHYSICS, 1989, 77 (1-2) :155-161

[10] REPRODUCIBLE TUNNELING DATA ON CHEMICALLY ETCHED SINGLE-CRYSTALS OF YBA2CU3O7 [J].

GURVITCH, M ;

VALLES, JM ;

CUCOLO, AM ;

DYNES, RC ;

GARNO, JP ;

SCHNEEMEYER, LF ;

WASZCZAK, JV .

PHYSICAL REVIEW LETTERS, 1989, 63 (09) :1008-1011

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