Synthesis of [101]-Oriented (Na1-xKx)NbO3 Platelets by Using Hydrothermally Produced (K8-8xNa8x)Nb6O19·nH2O Precursor

Hai Bo Xu; In Tae Seo; Bo Hee Hwang; Tae Gon Lee; Su Jin Park; Bo Yun Kim; Joon Hak Oh; Sahn Nahm

doi:10.1111/jace.14037

Synthesis of [101]-Oriented (Na_1-xK_x)NbO₃ Platelets by Using Hydrothermally Produced (K_8-8xNa_8x)Nb₆O₁₉·nH₂O Precursor

Hai Bo Xu, In Tae Seo, Bo Hee Hwang, Tae Gon Lee, Su Jin Park, Bo Yun Kim, Joon Hak Oh, Sahn Nahm

Department of Materials Science and Engineering

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

5 Citations (Scopus)

Abstract

Micrometer size [10] (N_1-xK_x)NbO₃ (NKN) platelets were synthesized by annealing (K_8-8xNa_8x)Nb₆O₁₉·nH₂O (KNNH) precursors at 500°C. The plate-like KNNH precursors were produced from (1-y)NaOH-yKOH + Nb₂O₅ specimens using the hydrothermal process at 160°C. The size of the NKN platelets was similar to that of the KNNH precursor, but the surfaces of the NKN platelets were rough while the KNNH precursor had a smooth surface. The formation of a rough surface is related to the vigorous evaporation of the H₂O from the KNNH platelets during the annealing process at high temperatures. NKN platelets with smooth surfaces could be synthesized using KNNH platelets, which were heated to 150°C to evaporate H₂O before annealing at 500°C. These NKN platelets can be used for the fabrication of textured NKN ceramics.

Original language	English
Pages (from-to)	796-801
Number of pages	6
Journal	Journal of the American Ceramic Society
Volume	99
Issue number	3
DOIs	https://doi.org/10.1111/jace.14037
Publication status	Published - 2016 Mar

Bibliographical note

Publisher Copyright:
© 2015 The American Ceramic Society.

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Access to Document

10.1111/jace.14037

Cite this

@article{85c3cf9888d243c1baf4d11f9e03fc9f,

title = "Synthesis of [101]-Oriented (Na1-xKx)NbO3 Platelets by Using Hydrothermally Produced (K8-8xNa8x)Nb6O19·nH2O Precursor",

abstract = "Micrometer size [10] (N1-xKx)NbO3 (NKN) platelets were synthesized by annealing (K8-8xNa8x)Nb6O19·nH2O (KNNH) precursors at 500°C. The plate-like KNNH precursors were produced from (1-y)NaOH-yKOH + Nb2O5 specimens using the hydrothermal process at 160°C. The size of the NKN platelets was similar to that of the KNNH precursor, but the surfaces of the NKN platelets were rough while the KNNH precursor had a smooth surface. The formation of a rough surface is related to the vigorous evaporation of the H2O from the KNNH platelets during the annealing process at high temperatures. NKN platelets with smooth surfaces could be synthesized using KNNH platelets, which were heated to 150°C to evaporate H2O before annealing at 500°C. These NKN platelets can be used for the fabrication of textured NKN ceramics.",

author = "Xu, {Hai Bo} and Seo, {In Tae} and Hwang, {Bo Hee} and Lee, {Tae Gon} and Park, {Su Jin} and Kim, {Bo Yun} and Oh, {Joon Hak} and Sahn Nahm",

note = "Publisher Copyright: {\textcopyright} 2015 The American Ceramic Society.",

year = "2016",

month = mar,

doi = "10.1111/jace.14037",

language = "English",

volume = "99",

pages = "796--801",

journal = "Journal of the American Ceramic Society",

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AU - Xu, Hai Bo

AU - Seo, In Tae

AU - Hwang, Bo Hee

AU - Lee, Tae Gon

AU - Park, Su Jin

AU - Kim, Bo Yun

AU - Oh, Joon Hak

AU - Nahm, Sahn

PY - 2016/3

Y1 - 2016/3

N2 - Micrometer size [10] (N1-xKx)NbO3 (NKN) platelets were synthesized by annealing (K8-8xNa8x)Nb6O19·nH2O (KNNH) precursors at 500°C. The plate-like KNNH precursors were produced from (1-y)NaOH-yKOH + Nb2O5 specimens using the hydrothermal process at 160°C. The size of the NKN platelets was similar to that of the KNNH precursor, but the surfaces of the NKN platelets were rough while the KNNH precursor had a smooth surface. The formation of a rough surface is related to the vigorous evaporation of the H2O from the KNNH platelets during the annealing process at high temperatures. NKN platelets with smooth surfaces could be synthesized using KNNH platelets, which were heated to 150°C to evaporate H2O before annealing at 500°C. These NKN platelets can be used for the fabrication of textured NKN ceramics.

AB - Micrometer size [10] (N1-xKx)NbO3 (NKN) platelets were synthesized by annealing (K8-8xNa8x)Nb6O19·nH2O (KNNH) precursors at 500°C. The plate-like KNNH precursors were produced from (1-y)NaOH-yKOH + Nb2O5 specimens using the hydrothermal process at 160°C. The size of the NKN platelets was similar to that of the KNNH precursor, but the surfaces of the NKN platelets were rough while the KNNH precursor had a smooth surface. The formation of a rough surface is related to the vigorous evaporation of the H2O from the KNNH platelets during the annealing process at high temperatures. NKN platelets with smooth surfaces could be synthesized using KNNH platelets, which were heated to 150°C to evaporate H2O before annealing at 500°C. These NKN platelets can be used for the fabrication of textured NKN ceramics.

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