Change in crystal structure related with two different blocks in Bi1.7Pb0.3Sr2Ca2Cu3Ox

Some structural changes are observed in the sample of Bi1.7Pb0.3Sr2Ca2Cu3Ox. Temperature dependence x-ray diffraction demonstrates that there are two lattice softness in low temperature range, one at about 220 K, another at about 120 K, and two lattice expansions at high temperature range, one at 300 degrees C and another at 750 degrees C. Thermal analyses support the results of x-ray diffraction, we suggest that these changes in crystal structure relate with the two different blocks in the titled compound.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1997XZ90500221&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Physics, AppliedSCI(E)EI