Synthesis and properties of Nd-substituted bismuth titanate polycrystalline thin films with polar-axis orientation

Masahiro Kurachi; Hirofumi Matsuda; Takashi Iijima; Hiroshi Uchida; Seiichiro Koda; Takayuki Watanabe; Hiroshi Funakubo

doi:10.4028/www.scientific.net/kem.269.53

Synthesis and properties of Nd-substituted bismuth titanate polycrystalline thin films with polar-axis orientation

Masahiro Kurachi, Hirofumi Matsuda, Takashi Iijima, Hiroshi Uchida, Seiichiro Koda, Takayuki Watanabe, Hiroshi Funakubo

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

To gain a deep insight into the contribution of Nd-substitution, we have investigated structural phase transition behavior in Bi_4-xNd _xTi₃O₁₂ (BNT) powders derived from chemical solutions. Differential thermal analysis and thermo-gravimetry (DTA-TG) and X-ray diffraction (XRD) studies indicated that the para- and ferroelectric transition temperature (Curie temperature, T_c) continuously decreased with increasing x. The XRD studies also showed that continuous decrease in lattice anisotropy (a/b, orthorhombicity) with the increase of x. Considering the close relationship with T_c, a/b and spontaneous polarization P_s in displacive ferroelectrics, Nd-substitution may not enhance the intrinsic P_s in Bi₄Ti₃O₁₂ (BIT). For direct evaluation of P_s upon Nd-substitution, synthesis route to polar-axis-orientated BNT films was investigated.

Original language	English
Pages (from-to)	53-56
Number of pages	4
Journal	Key Engineering Materials
Volume	269
DOIs	https://doi.org/10.4028/www.scientific.net/kem.269.53
Publication status	Published - 2004
Externally published	Yes
Event	Proceedings of the 23rd Electronics Division Meeting of the Ceramic Society of Japan - Kawasaki, Japan Duration: Oct 23 2003 → Oct 24 2003

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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title = "Synthesis and properties of Nd-substituted bismuth titanate polycrystalline thin films with polar-axis orientation",

abstract = "To gain a deep insight into the contribution of Nd-substitution, we have investigated structural phase transition behavior in Bi4-xNd xTi3O12 (BNT) powders derived from chemical solutions. Differential thermal analysis and thermo-gravimetry (DTA-TG) and X-ray diffraction (XRD) studies indicated that the para- and ferroelectric transition temperature (Curie temperature, Tc) continuously decreased with increasing x. The XRD studies also showed that continuous decrease in lattice anisotropy (a/b, orthorhombicity) with the increase of x. Considering the close relationship with Tc, a/b and spontaneous polarization Ps in displacive ferroelectrics, Nd-substitution may not enhance the intrinsic Ps in Bi4Ti3O12 (BIT). For direct evaluation of Ps upon Nd-substitution, synthesis route to polar-axis-orientated BNT films was investigated.",

author = "Masahiro Kurachi and Hirofumi Matsuda and Takashi Iijima and Hiroshi Uchida and Seiichiro Koda and Takayuki Watanabe and Hiroshi Funakubo",

note = "Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; Proceedings of the 23rd Electronics Division Meeting of the Ceramic Society of Japan ; Conference date: 23-10-2003 Through 24-10-2003",

year = "2004",

doi = "10.4028/www.scientific.net/kem.269.53",

language = "English",

volume = "269",

pages = "53--56",

journal = "Key Engineering Materials",

issn = "1013-9826",

publisher = "Trans Tech Publications",

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TY - JOUR

T1 - Synthesis and properties of Nd-substituted bismuth titanate polycrystalline thin films with polar-axis orientation

AU - Kurachi, Masahiro

AU - Matsuda, Hirofumi

AU - Iijima, Takashi

AU - Uchida, Hiroshi

AU - Koda, Seiichiro

AU - Watanabe, Takayuki

AU - Funakubo, Hiroshi

PY - 2004

Y1 - 2004

N2 - To gain a deep insight into the contribution of Nd-substitution, we have investigated structural phase transition behavior in Bi4-xNd xTi3O12 (BNT) powders derived from chemical solutions. Differential thermal analysis and thermo-gravimetry (DTA-TG) and X-ray diffraction (XRD) studies indicated that the para- and ferroelectric transition temperature (Curie temperature, Tc) continuously decreased with increasing x. The XRD studies also showed that continuous decrease in lattice anisotropy (a/b, orthorhombicity) with the increase of x. Considering the close relationship with Tc, a/b and spontaneous polarization Ps in displacive ferroelectrics, Nd-substitution may not enhance the intrinsic Ps in Bi4Ti3O12 (BIT). For direct evaluation of Ps upon Nd-substitution, synthesis route to polar-axis-orientated BNT films was investigated.

AB - To gain a deep insight into the contribution of Nd-substitution, we have investigated structural phase transition behavior in Bi4-xNd xTi3O12 (BNT) powders derived from chemical solutions. Differential thermal analysis and thermo-gravimetry (DTA-TG) and X-ray diffraction (XRD) studies indicated that the para- and ferroelectric transition temperature (Curie temperature, Tc) continuously decreased with increasing x. The XRD studies also showed that continuous decrease in lattice anisotropy (a/b, orthorhombicity) with the increase of x. Considering the close relationship with Tc, a/b and spontaneous polarization Ps in displacive ferroelectrics, Nd-substitution may not enhance the intrinsic Ps in Bi4Ti3O12 (BIT). For direct evaluation of Ps upon Nd-substitution, synthesis route to polar-axis-orientated BNT films was investigated.

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VL - 269

SP - 53

EP - 56

JO - Key Engineering Materials

JF - Key Engineering Materials

SN - 1013-9826

T2 - Proceedings of the 23rd Electronics Division Meeting of the Ceramic Society of Japan

Y2 - 23 October 2003 through 24 October 2003

ER -

Synthesis and properties of Nd-substituted bismuth titanate polycrystalline thin films with polar-axis orientation

Abstract

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