Linear and nonlinear dielectric response of the first-order ferroelectric phase transition in K^sub 0.92^Li^sub 0.08^TaO^sub 3^ under dc electric field
The results of measurements of low-temperature susceptibility: linear and nonlinear, and polarization under dc electric field of the lithium-doped potassium tantalate K0.92Li0.08TaO3 (KLT-8%Li) solid solution are presented. The recognized coexistence of the relaxor-like and ferroelectric behavior is...
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| Veröffentlicht in: | Materials chemistry and physics 2018-11, Vol.219, p.278 |
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| creator | Trybuła, Zbigniew Łoś, Szymon Miga, Seweryn Kempiński, Wojciech Dec, Jan Trybuła, Małgorzata |
| description | The results of measurements of low-temperature susceptibility: linear and nonlinear, and polarization under dc electric field of the lithium-doped potassium tantalate K0.92Li0.08TaO3 (KLT-8%Li) solid solution are presented. The recognized coexistence of the relaxor-like and ferroelectric behavior is presented. The observed ferroelectric phase transition is of the first-order type. Using an external dc electric field Edc = 178 kV/m the temperature of the ferroelectric phase transition is shifted by 3 K toward the value of 117 K, relative to the TC = 114 K observed without external dc electric field. Experimental facts reported in the present paper allowed us to argue that ferroelectricity in K1-xLixTaO3, in the case of x > 0.022 is due to a dynamical correlation of the off-center motions of Ta+5 ions in the octahedral environment of oxygen ions and does not arise directly as a result of the ordering of Li+ ion dipole moments within the so-called polar nanoregions. |
| doi_str_mv | 10.1016/j.matchemphys.2018.08.037 |
| format | Article |
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The recognized coexistence of the relaxor-like and ferroelectric behavior is presented. The observed ferroelectric phase transition is of the first-order type. Using an external dc electric field Edc = 178 kV/m the temperature of the ferroelectric phase transition is shifted by 3 K toward the value of 117 K, relative to the TC = 114 K observed without external dc electric field. Experimental facts reported in the present paper allowed us to argue that ferroelectricity in K1-xLixTaO3, in the case of x > 0.022 is due to a dynamical correlation of the off-center motions of Ta+5 ions in the octahedral environment of oxygen ions and does not arise directly as a result of the ordering of Li+ ion dipole moments within the so-called polar nanoregions.</description><identifier>ISSN: 0254-0584</identifier><identifier>EISSN: 1879-3312</identifier><identifier>DOI: 10.1016/j.matchemphys.2018.08.037</identifier><language>eng</language><publisher>Lausanne: Elsevier BV</publisher><subject>Dielectrics ; Dipole moments ; Direct current ; Electric fields ; Ferroelectric materials ; Ferroelectricity ; Ferroelectrics ; Lithium ions ; Nonlinear response ; Oxygen ions ; Phase transitions ; Relaxors ; Solid solutions ; Tantalum</subject><ispartof>Materials chemistry and physics, 2018-11, Vol.219, p.278</ispartof><rights>Copyright Elsevier BV Nov 1, 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Trybuła, Zbigniew</creatorcontrib><creatorcontrib>Łoś, Szymon</creatorcontrib><creatorcontrib>Miga, Seweryn</creatorcontrib><creatorcontrib>Kempiński, Wojciech</creatorcontrib><creatorcontrib>Dec, Jan</creatorcontrib><creatorcontrib>Trybuła, Małgorzata</creatorcontrib><title>Linear and nonlinear dielectric response of the first-order ferroelectric phase transition in K^sub 0.92^Li^sub 0.08^TaO^sub 3^ under dc electric field</title><title>Materials chemistry and physics</title><description>The results of measurements of low-temperature susceptibility: linear and nonlinear, and polarization under dc electric field of the lithium-doped potassium tantalate K0.92Li0.08TaO3 (KLT-8%Li) solid solution are presented. The recognized coexistence of the relaxor-like and ferroelectric behavior is presented. The observed ferroelectric phase transition is of the first-order type. Using an external dc electric field Edc = 178 kV/m the temperature of the ferroelectric phase transition is shifted by 3 K toward the value of 117 K, relative to the TC = 114 K observed without external dc electric field. 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| ispartof | Materials chemistry and physics, 2018-11, Vol.219, p.278 |
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| subjects | Dielectrics Dipole moments Direct current Electric fields Ferroelectric materials Ferroelectricity Ferroelectrics Lithium ions Nonlinear response Oxygen ions Phase transitions Relaxors Solid solutions Tantalum |
| title | Linear and nonlinear dielectric response of the first-order ferroelectric phase transition in K^sub 0.92^Li^sub 0.08^TaO^sub 3^ under dc electric field |
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