Phase transition anomaly observed in PbZrO<inf>3</inf>/Al<inf>2</inf>O <inf>3</inf> nanocomposites
Effects of Al 2 O 3 nanoparticle additions on the phase transitions of PbZrO 3 /Al 2 O 3 nanocomposites were investigated. The nanocomposites were prepared by a solid-state reaction method. The phase transition behaviour of the composites was studied by dielectric measurements and differential sca...
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th-cmuir.6653943832-432252017-09-28T06:52:28Z Phase transition anomaly observed in PbZrO<inf>3</inf>/Al<inf>2</inf>O <inf>3</inf> nanocomposites Puchmark C. Rujijanagul G. Milne S. Effects of Al 2 O 3 nanoparticle additions on the phase transitions of PbZrO 3 /Al 2 O 3 nanocomposites were investigated. The nanocomposites were prepared by a solid-state reaction method. The phase transition behaviour of the composites was studied by dielectric measurements and differential scanning calorimetry. Nanoparticle additions produced a significant reduction in the temperature of the phase transition from ferroelectric to antiferroelectric phase during the cooling measurement. This resulted in a large thermal hysteresis. The results indicated that the intermediate ferroelectric phase of PbZrO 3 is very sensitive to the Al 2 O 3 impurity. It is proposed that changes in defect chemistry due to the reaction between the nanoparticles and the matrix during sintering are responsible for the anomaly in phase transition behaviour. © 2010 Taylor & Francis. 2017-09-28T06:52:28Z 2017-09-28T06:52:28Z 2010-10-01 Journal 01411594 2-s2.0-78649357298 10.1080/01411594.2010.509163 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=78649357298&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/43225 |
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Effects of Al 2 O 3 nanoparticle additions on the phase transitions of PbZrO 3 /Al 2 O 3 nanocomposites were investigated. The nanocomposites were prepared by a solid-state reaction method. The phase transition behaviour of the composites was studied by dielectric measurements and differential scanning calorimetry. Nanoparticle additions produced a significant reduction in the temperature of the phase transition from ferroelectric to antiferroelectric phase during the cooling measurement. This resulted in a large thermal hysteresis. The results indicated that the intermediate ferroelectric phase of PbZrO 3 is very sensitive to the Al 2 O 3 impurity. It is proposed that changes in defect chemistry due to the reaction between the nanoparticles and the matrix during sintering are responsible for the anomaly in phase transition behaviour. © 2010 Taylor & Francis. |
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Puchmark C. Rujijanagul G. Milne S. |
spellingShingle |
Puchmark C. Rujijanagul G. Milne S. Phase transition anomaly observed in PbZrO<inf>3</inf>/Al<inf>2</inf>O <inf>3</inf> nanocomposites |
author_facet |
Puchmark C. Rujijanagul G. Milne S. |
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Puchmark C. |
title |
Phase transition anomaly observed in PbZrO<inf>3</inf>/Al<inf>2</inf>O <inf>3</inf> nanocomposites |
title_short |
Phase transition anomaly observed in PbZrO<inf>3</inf>/Al<inf>2</inf>O <inf>3</inf> nanocomposites |
title_full |
Phase transition anomaly observed in PbZrO<inf>3</inf>/Al<inf>2</inf>O <inf>3</inf> nanocomposites |
title_fullStr |
Phase transition anomaly observed in PbZrO<inf>3</inf>/Al<inf>2</inf>O <inf>3</inf> nanocomposites |
title_full_unstemmed |
Phase transition anomaly observed in PbZrO<inf>3</inf>/Al<inf>2</inf>O <inf>3</inf> nanocomposites |
title_sort |
phase transition anomaly observed in pbzro<inf>3</inf>/al<inf>2</inf>o <inf>3</inf> nanocomposites |
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2017 |
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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=78649357298&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/43225 |
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