Fabrication and anisotropic electronic property for oriented Li1+x−yNb1−x−3yTix+4yO3 solid solution by slip casting in a high magnetic field

Hiromi Nakano; Shohei Furuya; Motohiro Yuasa; Tohru S. Suzuki; Hitoshi Ohsato

doi:10.1016/j.apt.2017.06.020

Fabrication and anisotropic electronic property for oriented Li₁₊_x₋_yNb₁₋_x₋₃_yTi_x₊₄_yO₃ solid solution by slip casting in a high magnetic field

Hiromi Nakano^*, Shohei Furuya, Motohiro Yuasa, Tohru S. Suzuki, Hitoshi Ohsato

^*Corresponding author for this work

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

6 Citations (Scopus)

Abstract

The Li₁₊_x₋_yNb₁₋_x₋₃_yTi_x₊₄_yO₃ (0.06 ≤ x ≤ 0.33, 0 ≤ y ≤ 0.09) (hereafter LNT), forms a unique and periodical structure in the Li₂O-Nb₂O₅-TiO₂ ternary system. In this work, toward application of the unique qualities of an electro-ceramic, we fabricated oriented LNT balk ceramics by slip casting in a strong magnetic field of 12 T using various sizes of particles. The c-axis of the LNT powders was aligned parallel to the magnetic field. As a result, we found anisotropic- and unique- electric properties which were caused by a superstructure with intergrowth layers of corundum-type [Ti₂O₃]²⁺. The Qf value parallel to the c-axis was about five times greater than that of perpendicular to the c-axis. We first clarified the mechanism showing that the anisotropic Qf value was caused by the anisotropic electron conductivity and the anisotropic bonding strength in the superstructure.

Original language	English
Pages (from-to)	2373-2379
Number of pages	7
Journal	Advanced Powder Technology
Volume	28
Issue number	9
DOIs	https://doi.org/10.1016/j.apt.2017.06.020
Publication status	Published - 2017 Sept
Externally published	Yes

Keywords

Anisotropic electric property
Crystal structure
Grain orientation
Li-Nb-Ti-O solid solution
Superstructure

ASJC Scopus subject areas

Chemical Engineering(all)
Mechanics of Materials

Access to Document

10.1016/j.apt.2017.06.020

Cite this

@article{365c046b048d4830aafd38f212ab7554,

title = "Fabrication and anisotropic electronic property for oriented Li1+x−yNb1−x−3yTix+4yO3 solid solution by slip casting in a high magnetic field",

abstract = "The Li1+x−yNb1−x−3yTix+4yO3 (0.06 ≤ x ≤ 0.33, 0 ≤ y ≤ 0.09) (hereafter LNT), forms a unique and periodical structure in the Li2O-Nb2O5-TiO2 ternary system. In this work, toward application of the unique qualities of an electro-ceramic, we fabricated oriented LNT balk ceramics by slip casting in a strong magnetic field of 12 T using various sizes of particles. The c-axis of the LNT powders was aligned parallel to the magnetic field. As a result, we found anisotropic- and unique- electric properties which were caused by a superstructure with intergrowth layers of corundum-type [Ti2O3]2+. The Qf value parallel to the c-axis was about five times greater than that of perpendicular to the c-axis. We first clarified the mechanism showing that the anisotropic Qf value was caused by the anisotropic electron conductivity and the anisotropic bonding strength in the superstructure.",

keywords = "Anisotropic electric property, Crystal structure, Grain orientation, Li-Nb-Ti-O solid solution, Superstructure",

author = "Hiromi Nakano and Shohei Furuya and Motohiro Yuasa and Suzuki, {Tohru S.} and Hitoshi Ohsato",

note = "Funding Information: This work was partially supported by a Grant-in-Aid for Scientific Research (c) No. 16K06721 (H. N.) by the Japan Society for the Promotion of Science. Publisher Copyright: {\textcopyright} 2017 The Society of Powder Technology Japan",

year = "2017",

month = sep,

doi = "10.1016/j.apt.2017.06.020",

language = "English",

volume = "28",

pages = "2373--2379",

journal = "Advanced Powder Technology",

issn = "0921-8831",

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T1 - Fabrication and anisotropic electronic property for oriented Li1+x−yNb1−x−3yTix+4yO3 solid solution by slip casting in a high magnetic field

AU - Nakano, Hiromi

AU - Furuya, Shohei

AU - Yuasa, Motohiro

AU - Suzuki, Tohru S.

AU - Ohsato, Hitoshi

N1 - Funding Information: This work was partially supported by a Grant-in-Aid for Scientific Research (c) No. 16K06721 (H. N.) by the Japan Society for the Promotion of Science. Publisher Copyright: © 2017 The Society of Powder Technology Japan

PY - 2017/9

Y1 - 2017/9

N2 - The Li1+x−yNb1−x−3yTix+4yO3 (0.06 ≤ x ≤ 0.33, 0 ≤ y ≤ 0.09) (hereafter LNT), forms a unique and periodical structure in the Li2O-Nb2O5-TiO2 ternary system. In this work, toward application of the unique qualities of an electro-ceramic, we fabricated oriented LNT balk ceramics by slip casting in a strong magnetic field of 12 T using various sizes of particles. The c-axis of the LNT powders was aligned parallel to the magnetic field. As a result, we found anisotropic- and unique- electric properties which were caused by a superstructure with intergrowth layers of corundum-type [Ti2O3]2+. The Qf value parallel to the c-axis was about five times greater than that of perpendicular to the c-axis. We first clarified the mechanism showing that the anisotropic Qf value was caused by the anisotropic electron conductivity and the anisotropic bonding strength in the superstructure.

AB - The Li1+x−yNb1−x−3yTix+4yO3 (0.06 ≤ x ≤ 0.33, 0 ≤ y ≤ 0.09) (hereafter LNT), forms a unique and periodical structure in the Li2O-Nb2O5-TiO2 ternary system. In this work, toward application of the unique qualities of an electro-ceramic, we fabricated oriented LNT balk ceramics by slip casting in a strong magnetic field of 12 T using various sizes of particles. The c-axis of the LNT powders was aligned parallel to the magnetic field. As a result, we found anisotropic- and unique- electric properties which were caused by a superstructure with intergrowth layers of corundum-type [Ti2O3]2+. The Qf value parallel to the c-axis was about five times greater than that of perpendicular to the c-axis. We first clarified the mechanism showing that the anisotropic Qf value was caused by the anisotropic electron conductivity and the anisotropic bonding strength in the superstructure.

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