M
Masaru Miyayama
Researcher at University of Tokyo
Publications - 429
Citations - 9305
Masaru Miyayama is an academic researcher from University of Tokyo. The author has contributed to research in topics: Ferroelectricity & Conductivity. The author has an hindex of 48, co-authored 429 publications receiving 8595 citations.
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Journal ArticleDOI
Large remanent polarization of vanadium-doped Bi4Ti3O12
Yuji Noguchi,Masaru Miyayama +1 more
TL;DR: In this article, the effects of vanadium doping on the ferroelectric properties of Bi4Ti3O12 were investigated using dense ceramics, and vanadium-doped bi4Ti 3O12 could be obtained by sintering at temperatures 100-200°C lower than those for the SrBi2Ta2O9 system.
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Defect Control for Large Remanent Polarization in Bismuth Titanate Ferroelectrics ?Doping Effect of Higher-Valent Cations?
TL;DR: In this article, the effects of concentration and distribution of defects controlled by quenching and doping of higher-valent cations on the ferroelectric properties of dense Bi4Ti3O12 ceramics were investigated.
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Structure dependence of ferroelectric properties of bismuth layer-structured ferroelectric single crystals
TL;DR: In this article, the authors measured saturated P-E hysteresis curves of bismuth layer-structured ferroelectrics (BLSFs) and found that the saturated remanent polarization and coercive electric field were related to the Curie temperature and the number of BO6 octahedra.
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Direct evidence of A-site-deficient strontium bismuth tantalate and its enhanced ferroelectric properties
TL;DR: The Rietveld refinement of synchrotron-radiation diffraction has been performed to investigate the displacive-type ferroelectricity and crystal chemistry for Sr-deficient and Bi-excess strontium bismuth tantalate.
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Defect control for low leakage current in K0.5Na0.5NbO3 single crystals
TL;DR: In this article, the substitution of Mn at the Nb site and the following annealing under moderate oxidation condition was effective for suppressing leakage current of K0.5NbO3 (KNN) crystals.