MAGNETIC ORDER AND LOCAL STRUCTURAL ASPECTS INVOLVING GD IN GDBA2CU4O8

被引：6

作者：

BORNEMANN, HJ ^{[1
]}

MORRIS, DE ^{[1
]}

STEINLEITNER, C ^{[1
]}

CZJZEK, G ^{[1
]}

机构：

[1] KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,INST NUKL FESTKORPERPHYS,W-7500 KARLSRUHE 1,GERMANY

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.44.12567

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetization measurements and Mossbauer spectroscopy have been used to study the magnetic ordering and local structural aspects involving Gd ions in GdBa2Cu4O8. The reduced orthorhombicity of the 1:2:4 structure compared to the 1:2:3 is reflected by a significantly reduced asymmetry parameter-eta. Antiferromagnetic order of Gd moments is found at low temperatures. The magnetic ordering has a pronounced two-dimensional character. The magnetic spin configuration of the Gd moments, tilted by approximately 17-degrees with respect to the crystallographic c axis, shows the in-plane coupling between Gd ions to be due to exchange plus dipolar interactions.

引用

页码：12567 / 12570

页数：4

共 14 条

[1] A GD-155 MOSSBAUER STUDY OF GDBA2CU3O7-X - RESULTS CONCERNING CRYSTAL-STRUCTURE AND DYNAMICS [J].

BORNEMANN, HJ ;

CZJZEK, G ;

EWERT, D ;

MEYER, C ;

RENKER, B .

JOURNAL OF PHYSICS F-METAL PHYSICS, 1987, 17 (12) :L337-L343

[2] SYNTHESIS OF BULK SUPERCONDUCTING YBA2CU4O8 AT ONE ATMOSPHERE OXYGEN-PRESSURE [J].

CAVA, RJ ;

KRAJEWSKI, JJ ;

PECK, WF ;

BATLOGG, B ;

RUPP, LW ;

FLEMING, RM ;

JAMES, ACWP ;

MARSH, P .

NATURE, 1989, 338 (6213) :328-330

[3] MAGNETIC SPECIFIC-HEAT OF DY-3+ IN DYBA2CU3O7-DELTA COMPARED TO THE 2-D, S=1/2 ISING-MODEL PREDICTION [J].

DIRKEN, MW ;

DEJONGH, LJ .

SOLID STATE COMMUNICATIONS, 1987, 64 (09) :1201-1202

[4] CRYSTAL-STRUCTURE OF DYBA2CU4O8 - A NEW 77-K BULK SUPERCONDUCTOR [J].

HAZEN, RM ;

FINGER, LW ;

MORRIS, DE .

APPLIED PHYSICS LETTERS, 1989, 54 (11) :1057-1059

[5] SUPERCONDUCTIVITY ABOVE 90 K IN THE SQUARE-PLANAR COMPOUND SYSTEM ABA2CU3O6+X WITH A = Y, LA, ND, SM, EU, GD, HO, ER, AND LU [J].

HOR, PH ;

MENG, RL ;

WANG, YQ ;

GAO, L ;

HUANG, ZJ ;

BECHTOLD, J ;

FORSTER, K ;

CHU, CW .

PHYSICAL REVIEW LETTERS, 1987, 58 (18) :1891-1894

[6] BULK SYNTHESIS OF THE 81-K SUPERCONDUCTOR YBA2CU4O8 AT HIGH OXYGEN-PRESSURE [J].

KARPINSKI, J ;

KALDIS, E ;

JILEK, E ;

RUSIECKI, S ;

BUCHER, B .

NATURE, 1988, 336 (6200) :660-662

[7] LONG-RANGE MAGNETIC-ORDERING IN THE HIGH-TC SUPERCONDUCTORS RBA2CU3O7-DELTA (R=ND, SM, GD, DY, AND ER) [J].

LEE, BW ;

FERREIRA, JM ;

DALICHAOUCH, Y ;

TORIKACHVILI, MS ;

YANG, KN ;

MAPLE, MB .

PHYSICAL REVIEW B, 1988, 37 (04) :2368-2371

[8] X-RAY-INVESTIGATIONS OF Y1BA2CU4O8 UNDER HIGH-PRESSURE [J].

LUDWIG, HA ;

FIETZ, WH ;

DIETRICH, MR ;

WUHL, H ;

KARPINSKI, J ;

KALDIS, E ;

RUSIECKI, S .

PHYSICA C, 1990, 167 (3-4) :335-338

[9] MAGNETISM AND SUPERCONDUCTIVITY IN GDBA2CU3O7-X [J].

MEYER, C ;

BORNEMANN, HJ ;

SCHMIDT, H ;

AHRENS, R ;

EWERT, D ;

RENKER, B ;

CZJZEK, G .

JOURNAL OF PHYSICS F-METAL PHYSICS, 1987, 17 (12) :L345-L351

[10] 8 NEW HIGH-TEMPERATURE SUPERCONDUCTORS WITH THE 1-2-4 STRUCTURE [J].

MORRIS, DE ;

NICKEL, JH ;

WEI, JYT ;

ASMAR, NG ;

SCOTT, JS ;

SCHEVEN, UM ;

HULTGREN, CT ;

MARKELZ, AG ;

POST, JE ;

HEANEY, PJ ;

VEBLEN, DR ;

HAZEN, RM .

PHYSICAL REVIEW B, 1989, 39 (10) :7347-7350

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