High-temperature structural phase transition in the LiCu2O2 multiferroic
2013 (English)In: Journal of Experimental and Theoretical Physics, ISSN 1063-7761, E-ISSN 1090-6509, Vol. 117, no 2, 320-326 p.Article in journal (Refereed) Published
The results of thermogravimetric, X-ray diffraction, and electrical studies of LiCu2O2 single crystals in the temperature range 300-1100 K are presented. A reversible first-order phase transition between the orthorhombic and tetragonal phases is found to occur in these single crystals at T = 993 K. A pronounced peak on a differential thermal analysis curve and jumps in the unit cell parameters and the electrical resistivity are detected at the phase-transition temperature. The data on the crystal structure of LiCu2O2 and the phase transition-induced change in the entropy determined in this work are used to conclude that the revealed phase transition is caused by the ordering-disordering of Li+ and Cu2+ cations in their structural positions.
Place, publisher, year, edition, pages
2013. Vol. 117, no 2, 320-326 p.
Natural Sciences Engineering and Technology
Research subject Engineering Science with specialization in Solid State Physics
IdentifiersURN: urn:nbn:se:uu:diva-209490DOI: 10.1134/S1063776113100026ISI: 000324558800013OAI: oai:DiVA.org:uu-209490DiVA: diva2:658228