TY - JOUR
T1 - Twinning and lattice distortions in the epitaxy of La 0.67 Sr 0.33 MnO 3 thin films on (0 0 1) SrTiO 3
AU - Pailloux, Frédéric
AU - Lyonnet, Rose
AU - Maurice, Jean Luc
AU - Contour, Jean Pierre
PY - 2001/6/15
Y1 - 2001/6/15
N2 - We study the epitaxy of La 0.67 Sr 0.33 MnO 3 (LSMO) thin films on SrTiO 3 (STO) (0 0 1) by pulsed laser deposition (PLD). In addition to a lattice mismatch of 0.82%, ferromagnetic LSMO is rhombohedral (pseudo-cubic with an angle of 90.26°) while STO is cubic. We measure lattice distortions using quantitative high resolution electron microscopy (HRTEM). For low thickness far below the critical one, such distortions allow a partial recovery of the original rhombohedral symmetry of LSMO [R. Lyonnet et al., Appl. Surf. Sci. 162-163 (2000) 245]. Here, we present observations of layers of various thickness and further characterisation of this phenomenon as a function of misorientation of the substrate surface.
AB - We study the epitaxy of La 0.67 Sr 0.33 MnO 3 (LSMO) thin films on SrTiO 3 (STO) (0 0 1) by pulsed laser deposition (PLD). In addition to a lattice mismatch of 0.82%, ferromagnetic LSMO is rhombohedral (pseudo-cubic with an angle of 90.26°) while STO is cubic. We measure lattice distortions using quantitative high resolution electron microscopy (HRTEM). For low thickness far below the critical one, such distortions allow a partial recovery of the original rhombohedral symmetry of LSMO [R. Lyonnet et al., Appl. Surf. Sci. 162-163 (2000) 245]. Here, we present observations of layers of various thickness and further characterisation of this phenomenon as a function of misorientation of the substrate surface.
KW - Manganite thin films
KW - Pulsed laser deposition
KW - Quantitative HRTEM
KW - Twins
U2 - 10.1016/S0169-4332(01)00218-5
DO - 10.1016/S0169-4332(01)00218-5
M3 - Article
AN - SCOPUS:0035876594
SN - 0169-4332
VL - 177
SP - 263
EP - 267
JO - Applied Surface Science
JF - Applied Surface Science
IS - 4
ER -