TY - CPAPER KW - Thin films KW - Transmission electron microscopy KW - Film growth KW - Lanthanum compounds KW - Epitaxial growth KW - Ferroelectric films KW - Molecular dynamics KW - Thermal effects KW - Barium compounds KW - Mathematical models KW - Burgers vectors KW - Dislocation microstructures AU - I.B Misirlioglu AU - A.L Vasiliev AU - M Aindow AU - Ramamoorthy Ramesh AU - S.P Alpay AU - Hoffmann-Eifert S AU - Funakubo H AU - Joshi V V AU - Kingon A.I AU - Koutsaroff I.P AB -

Epitaxial Ba 0.6Sr 0.4TiO 3 films were grown onto (001) LaAlO 3 by pulsed-laser deposition, and the dislocation structures of the films were investigated using transmission electron microscopy. Misfit dislocations with a periodicity of about 7 nm and Burgers vectors b = a〈100〉 were observed at the interface. High densities of threading dislocations was present in the films with Burgers vector b = a〈100〉. The observations reveal that threading dislocations are not generated as the result of half-loop climb from the deposit surface as proposed previously, but are instead formed when misfit dislocations are forced away from the interface during island coalescence.

BT - Proceedings of the Materials Research Society Symposium - LA - eng N1 -

cited By 0

N2 -

Epitaxial Ba 0.6Sr 0.4TiO 3 films were grown onto (001) LaAlO 3 by pulsed-laser deposition, and the dislocation structures of the films were investigated using transmission electron microscopy. Misfit dislocations with a periodicity of about 7 nm and Burgers vectors b = a〈100〉 were observed at the interface. High densities of threading dislocations was present in the films with Burgers vector b = a〈100〉. The observations reveal that threading dislocations are not generated as the result of half-loop climb from the deposit surface as proposed previously, but are instead formed when misfit dislocations are forced away from the interface during island coalescence.

PY - 2003 SP - 49 EP - 54 T2 - Proceedings of the Materials Research Society Symposium - T3 - Materials Research Society Symposium - TI - A transmission electron microscopy study of dislocation substructures in PLD-grown epitaxial films of (Ba,Sr)TiO 3 on (001) LaAlO 3 VL - 784 SN - 02729172 ER -