Microstructure evolution and dielectric properties of K3Li2Nb5O15 and PbTiO3 composites

Myoung Sup Kim; Chang Dae Oh; Joon Hyung Lee; Jeong Joo Kim; Hee Young Lee; Sang Hee Cho

doi:10.1016/j.matlet.2006.03.027

Microstructure evolution and dielectric properties of K₃Li₂Nb₅O₁₅ and PbTiO₃ composites

Myoung Sup Kim
, Chang Dae Oh
, Joon Hyung Lee
, Jeong Joo Kim
, Hee Young Lee
, Sang Hee Cho

Kyungpook National University
Yeungnam University

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

3 Scopus citations

Abstract

Investigations of composite materials with two different crystal structured ferroelectric ceramics were carried out. In this study, phase development, sintering behavior and dielectric characteristics of the composites of tungsten bronze structured ferroelectric K₃Li₂Nb₅O₁₅ (KLN) and perovskite structured PbTiO₃ (PT) were examined as a function of molar ratio x in (1 - x) K₃Li₂Nb₅O₁₅-xPbTiO₃. A wide range of solid solution of PT in KLN was observed and the lattice constants of KLN decreased with PT contents. However, the solubility of KLN in PT was very narrow. X-ray analysis revealed that both KLN and PT phases coexisted in the samples from x = 0.4 to x = 0.9. Therefore, two dielectric relaxation peaks were observed in the samples with x = 0.4-0.8, each of which is originated from KLN and PT phase, respectively. The addition of PT to KLN increased the maximum dielectric constant at T_C and shifted the T_C to lower temperature. While T_C of PT rich samples were not changed significantly with KLN.

Original language	English
Pages (from-to)	3426-3430
Number of pages	5
Journal	Materials Letters
Volume	60
Issue number	28
DOIs	https://doi.org/10.1016/j.matlet.2006.03.027
State	Published - Dec 2006

Keywords

Ferroelectrics
KLN
Perovskite structure
PT
Tungsten bronze structure

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@article{aefb9ff7c1944166994a39c1137eb7cd,

title = "Microstructure evolution and dielectric properties of K3Li2Nb5O15 and PbTiO3 composites",

abstract = "Investigations of composite materials with two different crystal structured ferroelectric ceramics were carried out. In this study, phase development, sintering behavior and dielectric characteristics of the composites of tungsten bronze structured ferroelectric K3Li2Nb5O15 (KLN) and perovskite structured PbTiO3 (PT) were examined as a function of molar ratio x in (1 - x) K3Li2Nb5O15-xPbTiO3. A wide range of solid solution of PT in KLN was observed and the lattice constants of KLN decreased with PT contents. However, the solubility of KLN in PT was very narrow. X-ray analysis revealed that both KLN and PT phases coexisted in the samples from x = 0.4 to x = 0.9. Therefore, two dielectric relaxation peaks were observed in the samples with x = 0.4-0.8, each of which is originated from KLN and PT phase, respectively. The addition of PT to KLN increased the maximum dielectric constant at TC and shifted the TC to lower temperature. While TC of PT rich samples were not changed significantly with KLN.",

keywords = "Ferroelectrics, KLN, Perovskite structure, PT, Tungsten bronze structure",

author = "Kim, \{Myoung Sup\} and Oh, \{Chang Dae\} and Lee, \{Joon Hyung\} and Kim, \{Jeong Joo\} and Lee, \{Hee Young\} and Cho, \{Sang Hee\}",

year = "2006",

month = dec,

doi = "10.1016/j.matlet.2006.03.027",

language = "English",

volume = "60",

pages = "3426--3430",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Microstructure evolution and dielectric properties of K3Li2Nb5O15 and PbTiO3 composites

AU - Kim, Myoung Sup

AU - Oh, Chang Dae

AU - Lee, Joon Hyung

AU - Kim, Jeong Joo

AU - Lee, Hee Young

AU - Cho, Sang Hee

PY - 2006/12

Y1 - 2006/12

N2 - Investigations of composite materials with two different crystal structured ferroelectric ceramics were carried out. In this study, phase development, sintering behavior and dielectric characteristics of the composites of tungsten bronze structured ferroelectric K3Li2Nb5O15 (KLN) and perovskite structured PbTiO3 (PT) were examined as a function of molar ratio x in (1 - x) K3Li2Nb5O15-xPbTiO3. A wide range of solid solution of PT in KLN was observed and the lattice constants of KLN decreased with PT contents. However, the solubility of KLN in PT was very narrow. X-ray analysis revealed that both KLN and PT phases coexisted in the samples from x = 0.4 to x = 0.9. Therefore, two dielectric relaxation peaks were observed in the samples with x = 0.4-0.8, each of which is originated from KLN and PT phase, respectively. The addition of PT to KLN increased the maximum dielectric constant at TC and shifted the TC to lower temperature. While TC of PT rich samples were not changed significantly with KLN.

AB - Investigations of composite materials with two different crystal structured ferroelectric ceramics were carried out. In this study, phase development, sintering behavior and dielectric characteristics of the composites of tungsten bronze structured ferroelectric K3Li2Nb5O15 (KLN) and perovskite structured PbTiO3 (PT) were examined as a function of molar ratio x in (1 - x) K3Li2Nb5O15-xPbTiO3. A wide range of solid solution of PT in KLN was observed and the lattice constants of KLN decreased with PT contents. However, the solubility of KLN in PT was very narrow. X-ray analysis revealed that both KLN and PT phases coexisted in the samples from x = 0.4 to x = 0.9. Therefore, two dielectric relaxation peaks were observed in the samples with x = 0.4-0.8, each of which is originated from KLN and PT phase, respectively. The addition of PT to KLN increased the maximum dielectric constant at TC and shifted the TC to lower temperature. While TC of PT rich samples were not changed significantly with KLN.

KW - Ferroelectrics

KW - KLN

KW - Perovskite structure

KW - PT

KW - Tungsten bronze structure

UR - https://www.scopus.com/pages/publications/33749246379

U2 - 10.1016/j.matlet.2006.03.027

DO - 10.1016/j.matlet.2006.03.027

M3 - Article

AN - SCOPUS:33749246379

SN - 0167-577X

VL - 60

SP - 3426

EP - 3430

JO - Materials Letters

JF - Materials Letters

IS - 28

ER -

Microstructure evolution and dielectric properties of K₃Li₂Nb₅O₁₅ and PbTiO₃ composites

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Keywords

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