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Article Dans Une Revue Applied Physics Letters Année : 2015

Post-deposition control of ferroelestic stripe domains and internal electric field by thermal treatment

Résumé

The dependence of the formation of ferroelastic stripe domain patternes on the thermal history is investigated be detailed piezoresponse force microscopy and X-ray diffraction expeiments after and during annealing of tensile strained tetragonal Pb(Ti,Zr)O3 epitaxial thin films on DyScO3 substates. In particular, the ferroelastic pattern is reversibly interchanged between a cross-hatched and a stripe domain patterne if the films are cooled at different rates after annealing above the formation temperature of a-domains. Different types of 180° and non-180° patterns can be created, depending on the thermal treatment. The changes in the 180° domain structure and lattice parameters are attributed to a change of oxygen vacancy concentration, which results in a modification of the internal electric fiels and unit cell size, causing also a shift of Tc. Thermal treatment is done on rhombohedral La:BiFeO3 thin films as well. It is observed that also in these films, appropriate heat treatment modifies the domain pattern and films with a stripe domain pattern can be created, confirming the general validity of the developed model.
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Dates et versions

hal-01258452 , version 1 (19-01-2016)

Identifiants

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Feigl L., P.-E Janolin, T. Yamadaya, M. Iwanowska, C.S. Sandu, et al.. Post-deposition control of ferroelestic stripe domains and internal electric field by thermal treatment. Applied Physics Letters, 2015, 106, pp.032902. ⟨10.1063/1.4906295⟩. ⟨hal-01258452⟩
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