Chen, Y., Dai, J.Y., Au, K., Lam, K.H. , Qin, Y.B. and Yang, H.X. (2012) Temperature-dependent piezoelectric and dielectric properties of charge-ordered Lu2Fe2.1Mn0.9O7. Materials Letters, 68, pp. 54-56. (doi: 10.1016/j.matlet.2011.10.032)
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Abstract
Ferroelectric and piezoelectric properties of layered Lu2Fe2.1Mn0.9O7 ceramic have been investigated by temperature-dependent piezoresponse force microcopy (PFM) and dielectric measurements. The PFM results illustrate the existence of piezoelectric properties and ferroelectric phase transition temperature of about 90 °C at which the piezoelectricity vanishes. This transition temperature is manifested by the appearance of a shoulder at about 90 °C in the temperature-dependent dielectric curve of the poled sample. A macro-to-micro domain transition is proposed to explain this ferroelectric phase transition. Besides, the ferroelectric properties of the Lu2Fe2.1Mn0.9O7 ceramic are further demonstrated by the polarization-electric field hysteresis (P–E) loop measurement.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Lam, Dr Koko |
| Authors: | Chen, Y., Dai, J.Y., Au, K., Lam, K.H., Qin, Y.B., and Yang, H.X. |
| College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Journal Name: | Materials Letters |
| Publisher: | Elsevier |
| ISSN: | 0167-577X |
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