Open AccessStress-induced effects in epitaxial La0.33Pr0.34Ca0.33MnO3 films
Author(s) -
赵华英,
杨欢,
马继云,
方煦,
Muhammad Kamran,
戴耀民,
李明,
赵柏儒,
邱祥冈
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.7168
Subject(s) - materials science , ferromagnetism , pulsed laser deposition , epitaxy , condensed matter physics , thin film , phase (matter) , substrate (aquarium) , metal , composite material , nanotechnology , metallurgy , chemistry , physics , oceanography , organic chemistry , layer (electronics) , geology
La0.33Pr0.34Ca0.33MnO3 thin films have been grown on (100) LaAlO3 and (100) SrTiO3 substrates by pulsed laser deposition, and the physical properties of those thin films have been studied through magnetic and electric transport measurements. The results show that compressive strain between the film and substrate favors the formation of the ferromagnetic metallic phase while suppressing the charge ordered insulating phase. On the contrary, tensile strain tends to enhance the ferromagnetic metallic phase while eliminating the charge ordered insulating phase. The reason could be that the strain induces change in the Mn-O bonding angle in the crystal lattice and thus modify the double exchange interaction.