Structural and Piezoelectric Characteristics of Pseudocubic Ceramics with Low Domain Wall Energies

46 Pages Posted: 2 Apr 2019

See all articles by Tae-Gon Lee

Tae-Gon Lee

Korea University - Department of Nano Bio Information Technology

Sun-Woo Kim

Korea University - Department of Materials Science and Engineering

Eun-Ji Kim

Korea University - Department of Materials Science and Engineering

Hyun-Gyu Hwang

Korea University - Department of Nano Bio Information Technology

Ku-Tak Lee

Korea University - Department of Materials Science and Engineering

Youn-Woo Hong

Korea Institute of Ceramic Engineering and Technology (KICET)

Jeong Seog Kim

Hoseo University - Department of Materials Science and Engineering

Chong-Yun Kang

Korea University - Department of Nano Bio Information Technology; Korea University of Science and Technology (UST) - Center for Electronic Materials

Sahn Nahm

Korea University - Department of Nano Bio Information Technology; Korea University - Department of Materials Science and Engineering

Date Written: March 23, 2019

Abstract

Structural and piezoelectric properties of PbZrO3-PbTiO3-Pb(Ni1/3Nb2/3)O3 ceramics near the triple point composition, particularly characteristics of the pseudocubic phase, were investigated. The pseudocubic phase, which formed near the triple point composition, disappeared with increase in the PbZrO3 content. The pseudocubic structure was similar to the R3m rhombohedral structure. The tetragonal-pseudocubic morphotropic phase boundary (MPB) structure was developed during the tetragonal-to-cubic phase transformation. However, the rhombohedral phase directly transformed to the cubic phase, and the transformation did not involve the rhombohedral-pseudocubic MPB structure formation because the pseudocubic structure was similar to the rhombohedral structure. The specimens with pseudocubic phase and the specimens near pseudocubic phase exhibited nano-sized domains and small coercive electric fields, revealing their low domain wall energies. In addition, these specimens exhibited second-order ferroelectric-to-paraelectric phase transition and low Curie temperatures, confirming their low domain wall energies. The enhanced dielectric and piezoelectric properties of these specimens could be attributed to their low domain wall energies.

Keywords: Piezoelectricity, Ceramic material, Phase diagram, Nanodomains, Landau theory

Suggested Citation

Lee, Tae-Gon and Kim, Sun-Woo and Kim, Eun-Ji and Hwang, Hyun-Gyu and Lee, Ku-Tak and Hong, Youn-Woo and Kim, Jeong Seog and Kang, Chong-Yun and Nahm, Sahn, Structural and Piezoelectric Characteristics of Pseudocubic Ceramics with Low Domain Wall Energies (March 23, 2019). Available at SSRN: https://ssrn.com/abstract=3358888 or http://dx.doi.org/10.2139/ssrn.3358888

Tae-Gon Lee (Contact Author)

Korea University - Department of Nano Bio Information Technology

Seoul
Korea, Republic of (South Korea)

Sun-Woo Kim

Korea University - Department of Materials Science and Engineering

Seoul, 02841
Korea, Republic of (South Korea)

Eun-Ji Kim

Korea University - Department of Materials Science and Engineering

Seoul, 02841
Korea, Republic of (South Korea)

Hyun-Gyu Hwang

Korea University - Department of Nano Bio Information Technology

Seoul
Korea, Republic of (South Korea)

Ku-Tak Lee

Korea University - Department of Materials Science and Engineering

Seoul, 02841
Korea, Republic of (South Korea)

Youn-Woo Hong

Korea Institute of Ceramic Engineering and Technology (KICET)

Jinju, 52861
Korea, Republic of (South Korea)

Jeong Seog Kim

Hoseo University - Department of Materials Science and Engineering

Korea, Republic of (South Korea)

Chong-Yun Kang

Korea University - Department of Nano Bio Information Technology

Seoul
Korea, Republic of (South Korea)

Korea University of Science and Technology (UST) - Center for Electronic Materials

Seoul
Korea, Republic of (South Korea)

Sahn Nahm

Korea University - Department of Nano Bio Information Technology

Seoul
Korea, Republic of (South Korea)

Korea University - Department of Materials Science and Engineering

Seoul, 02841
Korea, Republic of (South Korea)

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