Dielectric properties of single crystalline Ba(Ti0.99Zr0.01)2O5 prepared by the floating zone method

Keiji Shiga; Hirokazu Katsui; Takashi Goto

doi:10.1016/j.matpr.2017.09.028

Dielectric properties of single crystalline Ba(Ti_0.99Zr_0.01)₂O₅ prepared by the floating zone method

Keiji Shiga, Hirokazu Katsui, Takashi Goto

Research output: Contribution to journal › Article › peer-review

Abstract

Zr⁴⁺-substituted single crystalline BaTi₂O₅ (Ba(Ti_0.99Zr_0.01)₂O₅) was prepared by the floating zone method, and its dielectric properties were investigated. The growth direction of Ba(Ti_0.99Zr_0.01)₂O₅ was parallel to the b axis. The Curie temperature of Ba(Ti_0.99Zr_0.01)₂O₅ was 710 K, which was 42 K lower than that of BaTi₂O₅. The complex impedance plane plot of BaTi₂O₅ in the b direction showed a semicircle associated with ferroelectric response and a spike associated with ionic conduction at 623 K. On the other hand, the complex impedance plot of Ba(Ti_0.99Zr_0.01)₂O₅ showed a single semicircle, suggesting almost no ionic conduction. The electrical conductivity of Ba(Ti_0.99Zr_0.01)₂O₅ was approximately half of that of BaTi₂O₅.

Original language	English
Pages (from-to)	11457-11460
Number of pages	4
Journal	Materials Today: Proceedings
Volume	4
Issue number	11
DOIs	https://doi.org/10.1016/j.matpr.2017.09.028
Publication status	Published - 2017

Keywords

BaTiO
Ferroelectric material
Impedance Floating zone method
Single crystal

ASJC Scopus subject areas

Materials Science(all)

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@article{e4663785d257470dae778a62862daf1b,

title = "Dielectric properties of single crystalline Ba(Ti0.99Zr0.01)2O5 prepared by the floating zone method",

abstract = "Zr4+-substituted single crystalline BaTi2O5 (Ba(Ti0.99Zr0.01)2O5) was prepared by the floating zone method, and its dielectric properties were investigated. The growth direction of Ba(Ti0.99Zr0.01)2O5 was parallel to the b axis. The Curie temperature of Ba(Ti0.99Zr0.01)2O5 was 710 K, which was 42 K lower than that of BaTi2O5. The complex impedance plane plot of BaTi2O5 in the b direction showed a semicircle associated with ferroelectric response and a spike associated with ionic conduction at 623 K. On the other hand, the complex impedance plot of Ba(Ti0.99Zr0.01)2O5 showed a single semicircle, suggesting almost no ionic conduction. The electrical conductivity of Ba(Ti0.99Zr0.01)2O5 was approximately half of that of BaTi2O5.",

keywords = "BaTiO, Ferroelectric material, Impedance Floating zone method, Single crystal",

author = "Keiji Shiga and Hirokazu Katsui and Takashi Goto",

note = "Funding Information: This study was supported by a Grant-in-Aid of Tohoku University Division for International Advanced Research and Education, and by a cooperative program (Proposal No. 16G0405) of the CRDAM-IMR, Tohoku University, Japan. This study was also partially supported by Seiko Instruments Inc.",

year = "2017",

doi = "10.1016/j.matpr.2017.09.028",

language = "English",

volume = "4",

pages = "11457--11460",

journal = "Materials Today: Proceedings",

issn = "2214-7853",

publisher = "Elsevier Limited",

number = "11",

}

TY - JOUR

T1 - Dielectric properties of single crystalline Ba(Ti0.99Zr0.01)2O5 prepared by the floating zone method

AU - Shiga, Keiji

AU - Katsui, Hirokazu

AU - Goto, Takashi

N1 - Funding Information: This study was supported by a Grant-in-Aid of Tohoku University Division for International Advanced Research and Education, and by a cooperative program (Proposal No. 16G0405) of the CRDAM-IMR, Tohoku University, Japan. This study was also partially supported by Seiko Instruments Inc.

PY - 2017

Y1 - 2017

N2 - Zr4+-substituted single crystalline BaTi2O5 (Ba(Ti0.99Zr0.01)2O5) was prepared by the floating zone method, and its dielectric properties were investigated. The growth direction of Ba(Ti0.99Zr0.01)2O5 was parallel to the b axis. The Curie temperature of Ba(Ti0.99Zr0.01)2O5 was 710 K, which was 42 K lower than that of BaTi2O5. The complex impedance plane plot of BaTi2O5 in the b direction showed a semicircle associated with ferroelectric response and a spike associated with ionic conduction at 623 K. On the other hand, the complex impedance plot of Ba(Ti0.99Zr0.01)2O5 showed a single semicircle, suggesting almost no ionic conduction. The electrical conductivity of Ba(Ti0.99Zr0.01)2O5 was approximately half of that of BaTi2O5.

AB - Zr4+-substituted single crystalline BaTi2O5 (Ba(Ti0.99Zr0.01)2O5) was prepared by the floating zone method, and its dielectric properties were investigated. The growth direction of Ba(Ti0.99Zr0.01)2O5 was parallel to the b axis. The Curie temperature of Ba(Ti0.99Zr0.01)2O5 was 710 K, which was 42 K lower than that of BaTi2O5. The complex impedance plane plot of BaTi2O5 in the b direction showed a semicircle associated with ferroelectric response and a spike associated with ionic conduction at 623 K. On the other hand, the complex impedance plot of Ba(Ti0.99Zr0.01)2O5 showed a single semicircle, suggesting almost no ionic conduction. The electrical conductivity of Ba(Ti0.99Zr0.01)2O5 was approximately half of that of BaTi2O5.

KW - BaTiO

KW - Ferroelectric material

KW - Impedance Floating zone method

KW - Single crystal

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