Epitaxial growth and piezoelectric characterization of the (1-x)BiScO{sub 3}-(x)PbTiO{sub 3} ultrathin film

Journal Article · Tue Mar 15 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3567297· OSTI ID:21538175

Wu, Youngsoo; Jin, Yeryeong; Kim, Bongju; Kwon, Daeyoung; Kim, Bog G ^[1]

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1. Department of Physics, Pusan National University, Busan 609-735 (Korea, Republic of)

We studied ferroelectric properties of morphotropic phase boundary (1-x)BiScO{sub 3}-(x)PbTiO{sub 3} (BSPT, x = 0.64) epitaxial thin films on SrTiO{sub 3} (001) and Nb:SrTiO{sub 3} (001). BSPT thin films with various thicknesses were deposited using off-axis radio frequency magnetron sputtering. By analyzing x-ray data of BSPT thin films with various thicknesses, we confirmed that films thinner than {approx}22 nm were in a strained state. Films thicker than {approx}22 nm were in a relaxed state because of the strain relaxation mechanism caused by misfit dislocation formation. Clear piezoresponses and polarization reversal phenomena can be observed in the ultrathin limit down to 8 nm through Piezo Force Microscope experiments. The piezoresponse data as a function of thickness correlates with the structural modification of thin films.

• OSTI ID: 21538175
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 6; Other Information: DOI: 10.1063/1.3567297; (c) 2011 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH COMPOUNDS
DEPOSITION
DISLOCATIONS
FERROELECTRIC MATERIALS
LEAD COMPOUNDS
MAGNETRONS
MODIFICATIONS
NIOBIUM ADDITIONS
PIEZOELECTRICITY
POLARIZATION
POLYMERASE CHAIN REACTION
RADIOWAVE RADIATION
RELAXATION
SCANDIUM COMPOUNDS
STRAINS
STRONTIUM TITANATES
THICKNESS
THIN FILMS
VAPOR PHASE EPITAXY
X RADIATION
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
CRYSTAL DEFECTS
CRYSTAL GROWTH METHODS
CRYSTAL STRUCTURE
DIELECTRIC MATERIALS
DIMENSIONS
ELECTRICITY
ELECTROMAGNETIC RADIATION
ELECTRON TUBES
ELECTRONIC EQUIPMENT
EPITAXY
EQUIPMENT
FILMS
GENE AMPLIFICATION
IONIZING RADIATIONS
LINE DEFECTS
MATERIALS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
NIOBIUM ALLOYS
OXYGEN COMPOUNDS
RADIATIONS
STRONTIUM COMPOUNDS
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT ALLOYS
TRANSITION ELEMENT COMPOUNDS