Incommensurate phase of (NH4)2BeF4in an applied electric field
| Autor: | Cene Filipič, Adrijan Levstik, Peter Prelovsek, Alenka Kandušer, Boštjan Žekš |
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| Rok vydání: | 1984 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Range (particle radiation) Condensed matter physics Transition temperature Dielectric Condensed Matter Physics Landau theory Electronic Optical and Magnetic Materials Nonlinear system Electric field Phase (matter) Condensed Matter::Strongly Correlated Electrons Phase diagram |
| Zdroj: | Ferroelectrics. 53:269-272 |
| ISSN: | 1563-5112 0015-0193 |
| DOI: | 10.1080/00150198408245064 |
| Popis: | The Landau theory developed predicts a narrower incommensurate phase of (NH4)2BeF4 in the presence of an applied bias electric field and allows the existence of a Lifshitz point in the phase diagram. The measurements of the dielectric constant e, performed in the range of bias fields up to E ∼ 90 kV/cm, show a nonlinear variation of the incommensurate-commensurate transition temperature with E and also a large reduction of the incommensurate phase at highest E, at which the Lifshitz point has still not been reached. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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