Crystal Growth of the Relaxor typed Ferroelectrics single crystal and Observation of the multi-ferroelectric domains

弛豫型铁电体单晶的晶体生长及多铁电畴的观察

• 批准号: 20560633
• 负责人: FUJITA Kazuhiko
• 金额: $ 2.83万
• 依托单位: Gifu National College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20560633/
• 关键词: リラクサー; 強誘電体; 圧電体; ドメイン構造; マルチドメイン; 固溶体

Lead-based relaxor ferroelectric single crystal solid solutions, such as a Pb(Zn_<1/3>Nb_<2/3>)O_3 -PbTiO_3 binary system, with compositions near the morphotropic phase boundary(MPB) have attracted considerable attention for several applications in higher-performance actuators, and ultrasonic devices, making use of their superior piezoelectric properties. From the view of the environmental protection, We have selected the lead-free ferroelectric sodium bismuth titanate (Na_<1/2>Bi_<1/2>)TiO_3-BaTiO_3 (NBT-BT) which has very excellent electromechanical properties, and trid to grow the solid solution single crystals of NBT-BT by the Bridgman methods. The domain observation of NBT-BT by using the polarizing microscope, nano-domain observation and piezoresponse in nanoscale regions by using piezoresponse force microscopy (PFM), measurement of dielectric permittivity, P-E hysteresis measurement with improved Sawyer-Tower circuit, were extensively investigated for NBT-BT relaxor ferroelectrics.

铅基弛豫铁电单晶固溶体具有接近准同型相界(MPB)的组成，具有优异的压电性能，在高性能驱动器和超声器件中的应用引起了人们的极大关注。从环保的角度出发，我们选择了机电性能优良的无铅铁电钛酸铋钠(Na_&lt；1/2&gt；Bi_&lt；1/2&gt；)TiO_3-BaTiO_3(NBT-BT)，并用Bridgman法生长了NBT-BT固溶体单晶。对NBT-BT弛豫铁电体进行了偏光显微镜的磁区观察、压电响应力显微镜(PFM)的纳米区观察、介电常数的测量、电滞回线的测量。

项目成果

Domain switching in nanometer scale in Bismuth-based relaxor solid solution

铋基弛豫固溶体中纳米尺度的畴切换

• 发表时间: 2011
• 期刊: Journal of Physics : Conference Series (in press)
• 作者: Naohiko Yasuda;Natsumi Takahashi;NurHidayah;Hidehiro Ohwa;Osamu Sakurada;Yoshihirto Tachi;Kazuhiko Fujita;Yohachi Yamashita;Makoto Iwata;Hikaru Terauchi;Yoshihiro Ishibashi
• 通讯作者: Yoshihiro Ishibashi

The effect of Pressure on the Poling Condition in the Lead-based Relaxor Ferroelectrics Solid Solutions

压力对铅基驰豫铁电体固溶体极化条件的影响

• 发表时间: 2011
• 期刊: Journal of the Korean Physical Society Vol.58(in press)
• 作者: Naohiko Yasuda;Naoki Miyazono;Hidehiro Ohwa;Yoshihito Tachi;Yohachi Yamashita;Kazuhiko Fujita;Makoto Iwata;Yoshihiro Ishibashi
• 通讯作者: Yoshihiro Ishibashi

リラクサ強誘電体固溶体の圧電応答に於けるナノツインドメインの電界誘起分極反転

弛豫铁电固溶体压电响应中电场诱导的纳米孪晶域极化反转

• 发表时间: 2009
• 作者: 安田直彦;Md.M.Rahman;大和英弘;岩田真;寺内暉;石橋善弘
• 通讯作者: 石橋善弘

ブリッジマン法で作製されたBi-O格子欠陥によるrandom fieldに基ずくリラクサ固溶体Na_<0.5>Bi_<0.5>TiO_3-BaTiO_3単結晶の圧電特性

Bridgman法制备的Bi-O晶格缺陷随机场弛豫固溶体Na_<0.5>Bi_<0.5>TiO_3-BaTiO_3单晶的压电特性

• 发表时间: 2010
• 作者: 安田直彦;大塚昌太;大和英弘;藤田一彦;岩田真;寺内暉;石橋善弘;高橋雅也;安田直彦
• 通讯作者: 安田直彦

強誘電体固溶体NBT-BTにおけるドメイン構造と誘電特性

铁电固溶体NBT-BT中的畴结构和介电性能

• 发表时间: 2010
• 作者: 安田直彦;高橋菜津美;ヒダヤ;大和英弘;藤田一彦;岩田真;寺内暉;石橋善弘
• 通讯作者: 石橋善弘