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Institut Néel Support group Bulk Crystal Growth |
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Institut Néel Support group Bulk Crystal Growth |
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| HAL: hal-00670196, version 1 |
| DOI: 10.1103/PhysRevB.85.024103 |
| Detailed view |  Export this paper |
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| Physical Review B 85, 2 (2012) 024103 (8 p.) |
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| Linking ionic conductivity and piezoelectric resonance in KTiOPO4 |
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| Dayalu Anand Ramanatha Theerthan 1Bertrand Ménaert 2 |
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| (2012) |
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| The interplay between the ionic conductivity and the ferroelectric polarization is a key point for understanding and tuning the properties of KTiOPO4 (KTP) single crystals. We show here that the piezoelectric resonance undergoes a well-defined splitting at 200 K for several KTP samples exhibiting different geometries, crystalline orientations, and ferroelectric domain states. This method is a powerful way for probing the buildup of ionic space charges when the ionic conductivity stops to screen the ferroelectric polarization. We also show that it is useful to track the evolution of this space charge under several thermal and moderate electrical stresses. |
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| 1: | Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) |
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CNRS : UPR9048 – Université de Bordeaux – Ecole Nationale Supérieure de Chimie, de Biologie et de Physique |
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| 2: | Institut Néel (NEEL) |
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CNRS : UPR2940 – Université Joseph Fourier - Grenoble I – Institut National Polytechnique de Grenoble (INPG) |
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| CrisMass MatONLP |
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| Subject | : | Chemical Sciences/Material chemistry |
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| Inorganic compounds – Piezoelectricity – Ionic conductivity |
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| hal-00670196, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00670196 | |
| oai:hal.archives-ouvertes.fr:hal-00670196 | |
| From: Stéphane Toulin | |
| Submitted on: Tuesday, 14 February 2012 18:29:03 | |
| Updated on: Thursday, 1 March 2012 14:26:33 | |
