Thermal expansion and magnetostriction of pure and doped RAgSb2 (R = Y, Sm, La) single crystals

TitleThermal expansion and magnetostriction of pure and doped RAgSb2 (R = Y, Sm, La) single crystals
Publication TypeJournal Article
Year of Publication2008
AuthorsBud'ko SL, Law SA, Canfield PC, Samolyuk GD, Torikachvili MS, Schmiedeshoff GM
Journal TitleJournal of Physics-Condensed Matter
Volume20
Pages115210
Date PublishedMar
Type of ArticleProceedings Paper
ISBN Number0953-8984
Accession NumberISI:000254101200036
KeywordsCE, CEAGSB2, compound, dependence, gd, nd, pressure, resistivity, TM, TRANSPORT
Abstract

Data on temperature-dependent, anisotropic thermal expansion in pure and doped RAgSb2 (R = Y, Sm, La) single crystals are presented. Using the Ehrenfest relation and heat capacity measurements, uniaxial pressure derivatives for long range magnetic ordering and charge density wave transition temperatures are evaluated and compared with the results of the direct measurements under hydrostatic pressure. In-plane and c-axis pressure have opposite effects on the phase transitions in these materials, with in-plane effects being significantly weaker. Quantum oscillations in magnetostriction were observed for the three pure compounds, with the possible detection of new frequencies in SmAgSb2 and LaAgSb2. The uniaxial (along the c-axis) pressure derivatives of the dominant extreme orbits (beta) were evaluated for YAgSb2 and LaAgSb2.

DOI10.1088/0953-8984/20/11/115210
Alternate JournalJ. Phys.-Condes. Matter