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Growth of perovskite (Bi, Ln)(Ni0.5Ti0.5)O-3 thin films by RF magnetron sputtering

Author:
Fukushima, Koji  Kobune, Masafumi  Yamaji, Toru  Tada, Hideto  Mineshige, Atsushi  Yazawa, Tetsuo  Fujisawa, Hironori  Shimizu, Masaru  Nishihata, Yasuo  Mizuki, Jun'ichiro  Yamaguchi, Hideshi  Honda, Koichiro  


Journal:
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS


Abstract(summary):

The epitaxial growth and formation mechanism of the partially La- and Nd-substituted perovskite structures, and the ferroelectric properties of bismuth lanthanoid nickel titanate [(Bi1-xLax)(Ni0.5Ti0.5)O-3; BLNT and (Bi1-xNdx)(Ni0.5Ti0.5)O-3; BNNT] based solid solution films deposited on Pt(100)/MgO(100) substrates by rf sputtering have been investigated using X-ray diffraction. transmission electron microscope, and polarization-electric field hysteresis loop measurements. BLNT samples at x >= 0.3 and BNNT samples at x >= 0.4 were confirmed to have a single-phase perovskite structure. This small difference is speculated that it is related to metal-oxygen bond dissociation energy. The sample substituted with La exhibited the best hysteresis loop at x = 0.5 with a remanent polarization of P, = 12 mu C/cm(2) and the sample substituted by Nd exhibited the best hysteresis loop at x = 0.4 with a remanent polarization Of P-r = 2 mu C/cm(2).


Page:
6938---6943


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