SUPERCONDUCTING CUPRATES AND RELATED OXIDES .3. CRYSTAL-STRUCTURE OF NDSRBACU2.88O6.8 AND OF ND1.33CA0.25BA1.42CU2.92O6.8

被引:4
作者
CHRISTENSEN, AN [1 ]
OREILLY, KPJ [1 ]
机构
[1] UNIV KEELE,DEPT CHEM,KEELE ST5 5BG,STAFFS,ENGLAND
来源
ACTA CHEMICA SCANDINAVICA | 1991年 / 45卷 / 09期
关键词
Metal atoms - Metal sites - Space Groups - Superconducting cuprates;
D O I
10.3891/acta.chem.scand.45-0958
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The metal atoms yttrium, barium and copper on the metal sites of the crystal structure of YBa2Cu307-δcan be substituted by other metal atoms.1-7Compounds of the type RECaBaCu307-δ and RESrBaCu307-δ (RE = La, Nd and Ho) were recently characterized by X-ray as well as by neutron diffraction powder methods, and profile refinements were made with models of the structure using the space groups P4/mmm (No. 123) and Pmmmm (No. 47).
引用
收藏
页码:958 / 960
页数:3
相关论文
共 15 条
[1]   A 2-CIRCLE POWDER DIFFRACTOMETER FOR SYNCHROTRON RADIATION WITH A CLOSED-LOOP ENCODER FEEDBACK-SYSTEM [J].
CERNIK, RJ ;
MURRAY, PK ;
PATTISON, P ;
FITCH, AN .
JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1990, 23 :292-296
[2]   SUPERCONDUCTING CUPRATES AND RELATED OXIDES .1. SOLID-STATE PREPARATION AND X-RAY CHARACTERIZATION OF SELECTED BINARY, TERNARY AND QUATERNARY OXIDES [J].
CHRISTENSEN, AN .
ACTA CHEMICA SCANDINAVICA, 1990, 44 (08) :769-776
[3]   SUPERCONDUCTING CUPRATES AND RELATED OXIDES .2. PROFILE REFINEMENT OF NEUTRON POWDER DIFFRACTION DATA [J].
CHRISTENSEN, AN ;
LEBECH, B .
ACTA CHEMICA SCANDINAVICA, 1990, 44 (09) :902-906
[4]   X-RAY SCATTERING FACTORS COMPUTED FROM NUMERICAL HARTREE-FOCK WAVE FUNCTIONS [J].
CROMER, DT ;
MANN, JB .
ACTA CRYSTALLOGRAPHICA SECTION A-CRYSTAL PHYSICS DIFFRACTION THEORETICAL AND GENERAL CRYSTALLOGRAPHY, 1968, A 24 :321-&
[5]   PROPERTIES OF THE TETRAGONAL SUPERCONDUCTOR CABALACU3OX [J].
DELEEUW, DM ;
MUTSAERS, CAHA ;
VANHAL, HAM ;
VERWEIJ, H ;
CARIM, AH ;
SMOORENBURG, HCA .
PHYSICA C, 1988, 156 (01) :126-132
[6]   HIGH-TEMPERATURE SUPERCONDUCTIVITY IN LABACACU3O6.85 [J].
FU, WT ;
ZANDBERGEN, HW ;
VANDERBEEK, CJ ;
DEJONGH, LJ .
PHYSICA C, 1988, 156 (01) :133-136
[7]   CRYSTAL-STRUCTURES OF SUPERCONDUCTING LABACACU3OY [J].
FUJISHITA, H ;
SHAMOTO, S ;
ONODA, M ;
SATO, M .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1989, 28 (05) :754-757
[8]   LANTHANIDE SUBSTITUTION IN YBA2CU3O9-DELTA [J].
KAREN, P ;
FJELLVAG, H ;
BRAATEN, O ;
KJEKSHUS, A ;
BRATSBERG, H .
ACTA CHEMICA SCANDINAVICA, 1990, 44 (10) :994-1001
[9]   CHEMICAL PRESSURE AND OTHER EFFECTS OF STRONTIUM SUBSTITUTION IN YBA2CU3O9-DELTA [J].
KAREN, P ;
FJELLVAG, H ;
KJEKSHUS, A ;
ANDRESEN, AF .
JOURNAL OF SOLID STATE CHEMISTRY, 1991, 92 (01) :57-67
[10]   X-RAY SINGLE-CRYSTAL STRUCTURE-ANALYSIS OF TETRAGONAL BA2YCU3-XO7-Y, A HIGH-TEMPERATURE FORM OF THE SUPERCONDUCTOR [J].
NAKAI, I ;
SUENO, S ;
OKAMURA, FP ;
ONO, A .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1987, 26 (05) :L788-L790