Domain Freezing in Triglycine Sulphate

Huang, Yineng; Li, X.; Ding, Yuanfeng; Shen, Hui; Zhang, Z.F.; Wang, Y.N.; Fang, Chao; Zhuo, Shaoyang

doi:10.1051/jp4:19968175

Cited by 4 publications

(5 citation statements)

References 7 publications

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“…The R 2 peak is commonly attributed to domain walls. Its behavior is close to that observed by Wang et al [6,15] in the case of ferroelectric La 1x Nd x P 5 O 14 . This peak does not follow the Arrhenius equation and the model of viscous motion of domain walls in the lattice can be applied.…”

supporting

confidence: 90%

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High Damping in Ferroelectric and Ferrimagnetic Ceramics

Fantozzi

Bourim

Kazemi

2006

KEM

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High damping materials exhibiting a loss factor higher than 10-2 are generally considered as polymer or metallic materials. But, it will be interesting to consider ferroelectric or ferrimagnetic ceramics, in which internal friction can be due to the motion of ferroelectric or magnetic domains. High level of internal friction can be obtained in these ceramics in a given temperature range. In the case of ferroelectric ceramics, hard ferroelectrics, such as BaTiO3 or PZT, can show some relaxation peaks below the Curie temperature due the motion of domain walls and the interaction between the domain walls and the oxygen vacancies or cationic vacancies. In the case of ferrimagnetic ceramics, some anelastic manifestations due to the ferrimagnetic domain walls appear below the Curie Temperature TC. These peaks are linked to the interaction of domain walls with cation vacancies or cation interstitials or the lattice. Above the Curie temperature, a relaxation mechanism due to the exchange of cations Mn3+ and their vacancies on octahedral sites should occur.

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supporting

confidence: 90%

“…At low temperature, a collective pinning of domain walls can occur leading to a freezing of domain walls near a temperature T f [6]. When the temperature is increased, collective pinning becomes weaker due to thermal fluctuation and individual pinning occurs.…”

Section: Introductionmentioning

confidence: 99%

High Damping in Ferroelectric and Ferrimagnetic Ceramics

Fantozzi

Bourim

Kazemi

2006

KEM

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“…As a result, the susceptibility drops down to the domainaveraged value. Such behaviour was found for example in dielectric measurements of KH 2 PO 4 (KDP) 14 and (NH 2 CH 2 COOH) 3 • H 2 SO 4 (TGS) 15 and in elastic measurements of KMnF 3 9,16 , PbZrO 3 13 and LaAlO 3 11 .…”

Section: Introductionmentioning

confidence: 59%

Segmental front line dynamics of randomly pinned ferroelastic domain walls

Puchberger

Soprunyuk

Schranz

et al. 2018

Phys. Rev. Materials

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Dynamic Mechanical Analysis (DMA) measurements as a function of temperature, frequency and dynamic force amplitude are used to perform a detailed study of the domain wall motion in LaAlO3. In previous DMA measurements Harrison, et al. [PRB 69, 144101 (2004)] found evidence for dynamic phase transitions of ferroelastic domain walls in LaAlO3. In the present work we focus on the creep-to-relaxation region of domain wall motion using two complementary methods. We determine, additionally to dynamic susceptibility data, waiting time distributions of strain jerks during slowly increasing stress. These strain jerks, which result from self-similar avalanches close to the depinning threshold, follow a power-law behaviour with an energy exponent ε = 1.7 ± 0.1. Also, the distribution of waiting times between events follows a power-law N (tw) ∝ t −(n+1) w with an exponent n = 0.9, which transforms to a power-law of susceptibility S(ω) ∝ ω −n . The present dynamic susceptibility data can be well fitted with a power law, with the same exponent (n=0.9) up to a characteristic frequency ω ≈ ω * , where a crossover from stochastic DW motion to the pinned regime is well described using the scaling function of A. A. Fedorenko, et al. [PRB 70, 224104 (2004)].

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“…Let us look at the various terms in Eq. (9). Electron Microscopy studies 48 revealed a small domain wall thickness of the order of unit cell dimensions.…”

Section: Discussionmentioning

confidence: 96%