ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
The ruthenocuprates family is a very interesting class of materials, because of thecoexistence of superconductivity and magnetic ordering. Ruthenocuprates includeRuSr2RECu2O8 and RuSr2(RE,Ce)2Cu2O10-[removed info] (RE = rare earth elements or Y). It is possible tosynthesize samples of these phases with Gd, Eu or Sm with normal synthesis conditions. Forthe others high-pressure high-temperature (HPHT) synthesis is required. We had successfullysynthesized the RuSr2Tb1.5Ce0.5Cu2O10 by HPHT technique, starting from RuO2, SrO2, Tb4O7,CeO2, CuO and Cu. Around 300 mg of the mixture was allowed to react in a flat-belt-typehigh-pressure apparatus at 6GPa and 1200 ºC – 1550 ºC. The optimised temperature ofsynthesis was found to be in the range between 1350 ºC – 1450 ºC. The as-synthesizedcompound crystallized with a structure belonging to the space group I4/mmm. DC magneticsusceptibility versus temperature plot for RuSr2Tb1.5Ce0.5Cu2O10 in an applied field of 10 Oedemonstrated magnetic transition at 150 K but the superconducting transition was not clearlyobserved. To our knowledge this is the first successful synthesis of the Tb based Ru-1222phase
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.47.31.pdf
Permalink