TY - JOUR
T1 - Nontrivial behavior of Tc at the small electric field in BaTiO3 crystals, detected by means of acoustic emission
AU - Dul'Kin, E.
AU - Roth, M.
PY - 2013/4/17
Y1 - 2013/4/17
N2 - Cubic-tetragonal phase transitions of [100]-oriented BaTiO3 crystals have been studied by means of an acoustic emission (AE) method, under an external electric field. The Curie temperature (Tc) reveals a nontrivial behavior at the small field, namely, it initially decreases with enhancement of the field, attains a minimum at the threshold field E th = 0.256 kV cm-1, accompanied by the AE count rate , and then starts increasing with a rate of 1.5 K m kV-1 as the field is enhanced. Such nontrivial behavior of Tc is explained as due to the presence of polar nanoregions, recently revealed in BaTiO3 crystals (Ko et al 2011 Phys. Rev. B 84 094123).
AB - Cubic-tetragonal phase transitions of [100]-oriented BaTiO3 crystals have been studied by means of an acoustic emission (AE) method, under an external electric field. The Curie temperature (Tc) reveals a nontrivial behavior at the small field, namely, it initially decreases with enhancement of the field, attains a minimum at the threshold field E th = 0.256 kV cm-1, accompanied by the AE count rate , and then starts increasing with a rate of 1.5 K m kV-1 as the field is enhanced. Such nontrivial behavior of Tc is explained as due to the presence of polar nanoregions, recently revealed in BaTiO3 crystals (Ko et al 2011 Phys. Rev. B 84 094123).
UR - http://www.scopus.com/inward/record.url?scp=84875669590&partnerID=8YFLogxK
U2 - 10.1088/0953-8984/25/15/155901
DO - 10.1088/0953-8984/25/15/155901
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AN - SCOPUS:84875669590
SN - 0953-8984
VL - 25
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 15
M1 - 155901
ER -