NEUTRON-DIFFRACTION INVESTIGATION OF STRUCTURES OF RE124 (RE = DY, HO, ER) AND ND247 SUPERCONDUCTORS - 2D ANTIFERROMAGNETISM IN DY124

被引：9

作者：

FISCHER, P

ROESSLI, B

MESOT, J

ALLENSPACH, P

STAUB, U

KALDIS, E

BUCHER, B

KARPINSKI, J

RUSIECKI, S

JILEK, E

HEWAT, AW

机构：

[1] INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE

[2] SWISS FED INST TECHNOL,SOLID STATE PHYS LAB,CH-8093 ZURICH,SWITZERLAND

来源：

PHYSICA B | 1992年 / 180卷

关键词：

D O I：

10.1016/0921-4526(92)90776-O

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

High resolution neutron diffraction studies were performed on carefully prepared powder samples of the high-T(c) superconductors REBa2Cu4O8 (RE = Dy, Er, Ho) ('R124') and on Nd2Ba4Cu7O15 ('Nd247') at temperatures down to 7 mK. The structure parameters of these compounds, which are isostructural to the R = Y systems (Ammm), were refined. In agreement with Zhang et al. two-dimensional (2D) antiferromagnetism exists in 'Dy124' below T(N) almost-equal-to 1.1 K. It appears to be stable down to T = 7 m K.

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收藏

页码：414 / 416

页数：3

相关论文

共 9 条

[1] SYNTHESIS OF LNBA2CU4O8 (LN=RARE EARTH ELEMENTS) CERAMICS AT ONE ATMOSPHERE OXYGEN-PRESSURE [J].

ADACHI, S ;

ADACHI, H ;

SETSUNE, K ;

WASA, K .

PHYSICA C, 1991, 175 (5-6) :523-528

[2] 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

[3] HIGH-RESOLUTION NEUTRON POWDER DIFFRACTION INVESTIGATION OF TEMPERATURE AND PRESSURE EFFECTS ON THE STRUCTURE OF THE HIGH-TC SUPERCONDUCTOR Y2BA4CU7O15 [J].

HEWAT, AW ;

FISCHER, P ;

KALDIS, E ;

KARPINSKI, J ;

RUSIECKI, S ;

JILEK, E .

PHYSICA C, 1990, 167 (5-6) :579-590

[4] LOW-TEMPERATURE ANOMALIES AND PRESSURE EFFECTS ON THE STRUCTURE AND 80-K OF THE SUPERCONDUCTOR YBA2CU4O8 [J].

KALDIS, E ;

FISCHER, P ;

HEWAT, AW ;

HEWAT, EA ;

KARPINSKI, J ;

RUSIECKI, S .

PHYSICA C, 1989, 159 (05) :668-680

[5] A VERSATILE DOUBLE-AXIS MULTICOUNTER NEUTRON POWDER DIFFRACTOMETER [J].

SCHEFER, J ;

FISCHER, P ;

HEER, H ;

ISACSON, A ;

KOCH, M ;

THUT, R .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1990, 288 (2-3) :477-485

[6]

SEARS VF, 1986, NEUTRON SCATTERING A, P521

[7] REVISED EFFECTIVE IONIC-RADII AND SYSTEMATIC STUDIES OF INTERATOMIC DISTANCES IN HALIDES AND CHALCOGENIDES [J].

SHANNON, RD .

ACTA CRYSTALLOGRAPHICA SECTION A, 1976, 32 (SEP1) :751-767

[8] A NEW COMPUTER-PROGRAM FOR RIETVELD ANALYSIS OF X-RAY-POWDER DIFFRACTION PATTERNS [J].

WILES, DB ;

YOUNG, RA .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1981, 14 (APR) :149-151

[9] 2-DIMENSIONAL AND 3-DIMENSIONAL MAGNETIC ORDER OF THE RARE-EARTH IONS IN RBA2CU4O8 [J].

ZHANG, H ;

LYNN, JW ;

LI, WH ;

CLINTON, TW ;

MORRIS, DE .

PHYSICAL REVIEW B, 1990, 41 (16) :11229-11236