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TEMPERATURE AND FIELD INDUCED STRUCTURAL TRANSITION IN LA2-X-YND0.4XCUO4 SINGLE CRYSTAL

I.M. Sutjahja 1,2, M. Diantoro 2,3, A.A. Nugroho 2, M.O Tjia 2, D. Tomuta , G.J.C. van Baarle, J. Aarts 4, A.A. Menovsky , et.al.

1 Van der Waals-Zeeman Instituut, Universiteit van Amsterdam,Valckenierstraat 65, 1018 XE, Amsterdam, The Netherlands
2 Department of Physics, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia
3 Department of Physics, University of Malang, Jl. Surabaya 6, Malang 65145, Indonesia
4 Kamerlingh Onnes Laboratorium, University of Leiden,Leiden, The Netherlands

Abstract
The structural phase transition in the La2-x-yNd~0.4SrxCuO4 (x = 0, 0.1, 0.2) single crystals have been investigated by means of specific heat, resistivity, and magnetization measurements. The phase transition indicating the structural instability has a pronounced effect on the heat and electrical transport properties. For the Sr-0.10 and Sr-0.20 samples, the low temperature LTO1-LTO2(LTT) structural phase transition is indicated by anomalies in the specific heat, resistivity, and magnetization data, while for Sr-0.00 sample this transition is signified by an anomaly in the specific heat data. The results of this study confirm most of the observation reported previously on similar samples, while clarifying some of the remaining controversies reported in the literatures.

Publication : Physics Journal IPS Proceeding Supplement A6 (2002) 0537
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Additional info : 5 pages, language English