High pressure high temperature (HPHT) synthesis and magnetism of Cr-12s2 copper oxides with fluorite-structured layers between CuO2 planes
- 1. National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi 110 012 (India)
- 2. SMC, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
Description
The three first members of the Cr-12s2 (s = 1, 2, 3) homologous series, i.e. CrSr2YCu2O8 (Cr-1212), CrSr2(Y1.5Ce0.5)Cu2O10 (Cr-1222) and CrSr2(Y1Ce2)Cu2O12(Cr-1232) are synthesized by high pressure high temperature (HPHT) 6 GPa and 1550 deg. C process. Though the Cr-1212 and Cr-1232 could not be formed in single phase with full Cr, the Cr-1222 is achieved in pure phase with space group I4/mmm. These compounds belong to the multi-layered copper oxides series that differ from each other only in terms of the (Ce,Y)-[O2-(Ce,Y)]s-1 layer blocks between two identical CuO2 planes with s = 1, 2 and 3. At 5 K, the magnetization M(H) experiments showed some ferromagnetic like hysteresis loops though the characteristic Mr and Hc were not seen clearly. None of the studied compounds exhibited superconductivity down to 5 K
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physc.2007.03.037Additional details
Identifiers
- DOI
- 10.1016/j.physc.2007.03.037;
- PII
- S0921-4534(07)00113-X;
Publishing Information
- Journal Title
- Physica. C, Superconductivity
- Journal Volume
- 460-462
- Journal Page Range
- p. 456-457
- ISSN
- 0921-4534
- CODEN
- PHYCE6
Conference
- Title
- 8. international conference on materials and mechanisms of superconductivity and high temperature superconductors
- Acronym
- M2S-HTSC VIII
- Dates
- 9-14 Jul 2006
- Place
- Dresden (Germany)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39068914
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CHROMIUM COMPOUNDS; COPPER COMPOUNDS; COPPER OXIDES; CUPRATES; FLUORITE; HYSTERESIS; LAYERS; MAGNETISM; MAGNETIZATION; OXYGEN COMPOUNDS; PRESSURE RANGE GIGA PA; SPACE GROUPS; STRONTIUM COMPOUNDS; SUPERCONDUCTIVITY; SYNTHESIS; TEMPERATURE RANGE 0000-0013 K; TEMPERATURE RANGE 0400-1000 K; TETRAGONAL LATTICES; YTTRIUM COMPOUNDS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTAL LATTICES; CRYSTAL STRUCTURE; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; HALIDE MINERALS; MINERALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PRESSURE RANGE; SYMMETRY GROUPS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.