Title :
Multiferroic properties in tetragonal and rhombohedral phase of BiFeO3/BaTiO3 heterostructures
Author :
Shao, F. ; Miao, J. ; Wu, Y. ; Xu, X. ; Jiang, Y.
Author_Institution :
Sch. of Mater. Sci. & Eng., Univ. of Sci. & Technol. Beijing, Beijing, China
Abstract :
Recently, a tetragonal-like phase BiFeO3 (BFO) has been made by utilizing highly mismatched LaAlO3 (LAO)[1]. However, a significant contribution from the leakage current make great difficulty for a direct experimental observation of the ferroelectric hysteresis loop [1]. Here, ferroelectric BaTiO3 (BTO) was epitaxially grown on T-phase BFO/BTO (i.e., BFO film grown on a (001) oriented LAO substrate) to act as a buffer layer, which would reduce the leakage current. As for comparison, R-phase BFO/BTO (i.e., BFO film deposited on (001) SrTiO3 (STO)) heterostructure were fabricated under the same deposited conditions.
Keywords :
barium compounds; bismuth compounds; buffer layers; dielectric hysteresis; epitaxial growth; epitaxial layers; ferroelectric thin films; leakage currents; multiferroics; BiFeO3-BaTiO3; LaAlO3; R-phase BFO-BTO; SrTiO3; buffer layer; epitaxial growth; ferroelectric hysteresis loop; heterostructures; leakage current; multiferroic properties; rhombohedral phase; tetragonal phase; Diffraction; Epitaxial growth; Leakage currents; Magnetic hysteresis; Strain; Substrates;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7157316
