TY - JOUR
T1 - Structural evolution and enhanced piezoresponse in cobalt-substituted BiFeO3thin films
AU - Hojo, Hajime
AU - Onuma, Ko
AU - Ikuhara, Yuichi
AU - Azuma, Masaki
N1 - Publisher Copyright:
© 2014 The Japan Society of Applied Physics.
PY - 2014/9/1
Y1 - 2014/9/1
N2 - The role of cobalt substitution in the crystal structure and piezo/ferroelectric properties of BiFeO3(BFO) thin films was studied. With the aid of epitaxial strain, (1% x)BiFeO3-xBiCoO3(BFCO) (0 ≤ x ≤ 0.12) films were stabilized on SrTiO3substrates, and an enhancement in their piezoresponses was observed. In the x = 0.15 BFCO film, an unconventional strain relaxation behavior, resulting in V-shaped domains of a "giant-c/a " phase of approximately 1.25, was observed. This observation demonstrates that the crystal structure and piezo /ferroelectric properties of BFO can be finely tuned by a combination of cobalt substitution and epitaxial strain.
AB - The role of cobalt substitution in the crystal structure and piezo/ferroelectric properties of BiFeO3(BFO) thin films was studied. With the aid of epitaxial strain, (1% x)BiFeO3-xBiCoO3(BFCO) (0 ≤ x ≤ 0.12) films were stabilized on SrTiO3substrates, and an enhancement in their piezoresponses was observed. In the x = 0.15 BFCO film, an unconventional strain relaxation behavior, resulting in V-shaped domains of a "giant-c/a " phase of approximately 1.25, was observed. This observation demonstrates that the crystal structure and piezo /ferroelectric properties of BFO can be finely tuned by a combination of cobalt substitution and epitaxial strain.
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U2 - 10.7567/APEX.7.091501
DO - 10.7567/APEX.7.091501
M3 - Article
AN - SCOPUS:84907020133
SN - 1882-0778
VL - 7
JO - Applied Physics Express
JF - Applied Physics Express
IS - 9
M1 - 091501
ER -