Evidence for monoclinic crystal structure and negative thermal expansion below magnetic transition temperature in Pb(Fe_1/2Nb_1/2)O_3

Simple item page
dc.creatorSingh, Satendra Pal
dc.creatorPandey, Dhananjai
dc.creatorYoon, Songhak
dc.creatorBaik, Sunggi
dc.creatorShin, Namsoo
dc.date2007-06-05
dc.date.accessioned2026-07-07T08:04:11Z
dc.date.available2026-07-07T08:04:11Z
dc.descriptionThe existing controversy about the room temperature structure of multiferroic Pb(Fe_1/2Nb_1/2)O_3 is settled using synchrotron powder x-ray diffraction data. Results of Rietveld refinements in the temperature range 300 to 12K reveal that the structure remains monoclinic in the Cm space group down to 12K, but the lattice parameters show anomalies at the magnetic transition temperature (T_N) due to spin lattice coupling. The lattice volume exhibits negative thermal expansion behaviour, with Alpha = - 4.64 x 10^-6 K^-1, below T_N.
dc.description14 pages, 3 figures, to appear in Appl. Phys. Lett
dc.identifierhttps://arxiv.org/abs/0706.0647
dc.identifierhttp://arxiv.org/abs/0706.0647
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/129861
dc.subjectMaterials Science
dc.subjectOther Condensed Matter
dc.titleEvidence for monoclinic crystal structure and negative thermal expansion below magnetic transition temperature in Pb(Fe_1/2Nb_1/2)O_3
dc.typetext

Files

Collections

arXiv