NEUTRON-DIFFRACTION STUDIES OF CA-PR DOPED YBA2CU3O7-DELTA

被引：20
作者：
ANDERSSON, M [1 ]
RAPP, O [1 ]
TELLGREN, R [1 ]
机构：
[1] UNIV UPPSALA,INST CHEM,S-75121 UPPSALA,SWEDEN
来源：
PHYSICA C | 1993年 / 205卷 / 1-2期
关键词：
D O I：
10.1016/0921-4534(93)90174-O
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have performed neutron powder diffraction on samples in a series Y1-2xCaxPrxBa2Cu3O7-delta, with x=0.0, 0.1 and 0.2, and analyzed the data with the Rietveld refinement method. Small changes were observed in atomic bond distances when the amount of Ca-Pr was increased. In general, these changes could qualitatively be viewed as the sum of effects from the Ca and Pr substitutions in YBa2Cu3O7-delta samples. Analyses of the distance between the superconducting CuO2 Planes suggest that the Pr ions in the Ca-Pr substituted samples have an effective valence close to + 4.
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页码：105 / 110
页数：6
相关论文
共 19 条
[1]   RELATION BETWEEN THE CU(1)-O(4) DISTANCE AND T(C) IN Y1-2XCAXTHXBA2CU3O7-DELTA - RAMAN-SCATTERING AND CALCULATION OF THE ELECTRON-PHONON INTERACTION [J].
ANDERSSON, M ;
BORJESSON, L ;
JARLBORG, T ;
PHUONG, HV ;
RAPP, O .
PHYSICAL REVIEW B, 1992, 46 (10) :6501-6504
[2]   NEUTRON-DIFFRACTION STUDIES OF INTERATOMIC DISTANCES IN THE Y1-2XCAXTHXBA2CU3O7-DELTA SYSTEM [J].
ANDERSSON, M ;
RAPP, O ;
TELLGREN, R .
SOLID STATE COMMUNICATIONS, 1992, 81 (05) :425-429
[3]   STRUCTURAL AND SUPERCONDUCTING PROPERTIES OF Y1-2XCAXPRXBA2CU3O7-GAMMA [J].
ANDERSSON, M ;
RAPP, O ;
HEGEDUS, Z ;
WEN, TL ;
NYGREN, M .
PHYSICA C, 1992, 190 (03) :255-260
[4]   STRUCTURAL ANOMALIES, OXYGEN ORDERING AND SUPERCONDUCTIVITY IN OXYGEN DEFICIENT BA2YCU3OX [J].
CAVA, RJ ;
HEWAT, AW ;
HEWAT, EA ;
BATLOGG, B ;
MAREZIO, M ;
RABE, KM ;
KRAJEWSKI, JJ ;
PECK, WF ;
RUPP, LW .
PHYSICA C, 1990, 165 (5-6) :419-433
[5]   THE STRUCTURAL EFFECTS OF NA AND CA SUBSTITUTIONS ON THE Y-SITE IN YBA2CU3O7-X [J].
GREAVES, C ;
SLATER, PR .
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 1989, 2 (01) :5-8
[6]  
HOWARD CJ, 1986, M112 AUSTR AT EN COM
[7]   ELECTRONIC-STRUCTURE AND ELECTRON-PHONON COUPLING IN HIGH-TC SUPERCONDUCTORS [J].
JARLBORG, T .
PHYSICA B, 1991, 172 (1-2) :245-251
[8]   STRUCTURAL-PROPERTIES OF OXYGEN-DEFICIENT YBA2CU3O7-DELTA [J].
JORGENSEN, JD ;
VEAL, BW ;
PAULIKAS, AP ;
NOWICKI, LJ ;
CRABTREE, GW ;
CLAUS, H ;
KWOK, WK .
PHYSICAL REVIEW B, 1990, 41 (04) :1863-1877
[9]   TIME-DEPENDENT STRUCTURAL PHENOMENA AT ROOM-TEMPERATURE IN QUENCHED YBA2CU3O6.41 - LOCAL OXYGEN ORDERING AND SUPERCONDUCTIVITY [J].
JORGENSEN, JD ;
PEI, S ;
LIGHTFOOT, P ;
SHI, H ;
PAULIKAS, AP ;
VEAL, BW .
PHYSICA C, 1990, 167 (5-6) :571-578
[10]   NEUTRON-DIFFRACTION STUDY OF PR VALENCE AND OXYGEN ORDERING IN THE Y1-XPRXBA2CU3O7-DELTA SYSTEM [J].
NEUMEIER, JJ ;
BJORNHOLM, T ;
MAPLE, MB ;
RHYNE, JJ ;
GOTAAS, JA .
PHYSICA C, 1990, 166 (1-2) :191-196
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