A phenomenological gibbs function for BaTiO3 giving correct e field dependence of all ferroelectric phase changes

Bell, Andrew J.; Cross, L. E.

doi:10.1080/00150198408240090

Cited by 125 publications

(87 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…(1) For ferroelectricity, Landau and Demonshire (LD) theory is the most popular and successful one. 4,[12][13][14] Unfortunately, more than five coefficients are introduced in LD theory for the free energy expression and give no physical significance [see Appendix B]. For example, with the appropriate values of the coefficients in LD theory obtained from the experimental data, the phase transitions (or the spontaneous polar directions) can be predicted by minimizing the free energy with respect to the polarization, but we have no idea of what is the driving force.…”

Section: Introductionmentioning

confidence: 99%

A theory for structural phase transitions in BaTiO3 single crystal and PbZrO3 -xPbTiO3 solid solution

Zhang

2013

AIP Advances

View full text Add to dashboard Cite

A phenomenological theory has been proposed for the diffusionless structuralphase transitions in BaTiO3single crystal and PbZrO3 -xPbTiO3 solid solution here. It has been found that for BaTiO3single crystal, both the phase transitionsand the crystal structurescan be predicted with the crystalline anisotropy constants and strain constants that depend on the temperature. For PbZrO3 -xPbTiO3 solution, the morphotropic phase boundaries arise from the strong dependence of the crystalline anisotropy constants on the composition. The good agreement between the numerical results and experimental observations has shown that our theory is effective for the diffusionless structuralphase transitions.

show abstract

Section: Introductionmentioning

confidence: 99%

A theory for structural phase transitions in BaTiO3 single crystal and PbZrO3 -xPbTiO3 solid solution

Zhang

2013

AIP Advances

View full text Add to dashboard Cite

show abstract

“…For example, the Landau polynomial as originally applied to ferroelectric barium titanate by Devonshire 188,189 has been elaborated on many times, and several alternative expressions for the free energy have been reported that reproduce experimental data with varying degrees of agreement. [190][191][192][193][194] The situation for ferroelectric solid solutions is more complicated still, because the dependence of the theory parameters on composition must also be explicitly determined. 195,196 Approaches for doing so that utilize analytical parameterization schemes have recently been reported.…”

Section: Challenges For Modeling Of Complex Oxide Heterostructuresmentioning

confidence: 99%

Challenges and opportunities for multi-functional oxide thin films for voltage tunable radio frequency/microwave components

Subramanyam¹,

Cole²,

Sun³

et al. 2013

Journal of Applied Physics

145

View full text Add to dashboard Cite

There has been significant progress on the fundamental science and technological applications of complex oxides and multiferroics. Among complex oxide thin films, barium strontium titanate (BST) has become the material of choice for room-temperature-based voltage-tunable dielectric thin films, due to its large dielectric tunability and low microwave loss at room temperature. BST thin film varactor technology based reconfigurable radio frequency (RF)/microwave components have been demonstrated with the potential to lower the size, weight, and power needs of a future generation of communication and radar systems. Low-power multiferroic devices have also been recently demonstrated. Strong magneto-electric coupling has also been demonstrated in different multiferroic heterostructures, which show giant voltage control of the ferromagnetic resonance frequency of more than two octaves. This manuscript reviews recent advances in the processing, and application development for the complex oxides and multiferroics, with the focus on voltage tunable RF/microwave components. The over-arching goal of this review is to provide a synopsis of the current state-of the-art of complex oxide and multiferroic thin film materials and devices, identify technical issues and technical challenges that need to be overcome for successful insertion of the technology for both military and commercial applications, and provide mitigation strategies to address these technical challenges. V C 2013 AIP Publishing LLC.

show abstract

“…Подставим числа (9) в качестве значений ангармонических констант γ i и δ j в формулы (5), (6). В результате получим …”

Section: ландау-девоншира для титаната барияunclassified

“…Это значит, что существует механизм, уменьшающий величину δB (1) 2 и тем самым способствующий малости этой поправки по сравнению с δB (1) 1 . Не исключено, что с действием именно этого механизма связано отсутствие темпе-ратурной зависимости коэффициента B 2 , восстановленного по экспериментальным данным в работах [4], [6], [7], при том что зависимость от температуры B 1 выявлена в этих работах весьма отчетливо.…”

unclassified

Флуктуации, Высшие Ангармонизмы И Разложение Гинзбурга - Ландау - Девоншира Для Титаната Бария

Соколов¹

2011

ТМФ

View full text Add to dashboard Cite

A phenomenological gibbs function for BaTiO3 giving correct e field dependence of all ferroelectric phase changes

Cited by 125 publications

References 9 publications

A theory for structural phase transitions in BaTiO3 single crystal and PbZrO3 -xPbTiO3 solid solution

A theory for structural phase transitions in BaTiO3 single crystal and PbZrO3 -xPbTiO3 solid solution

Challenges and opportunities for multi-functional oxide thin films for voltage tunable radio frequency/microwave components

Флуктуации, Высшие Ангармонизмы И Разложение Гинзбурга - Ландау - Девоншира Для Титаната Бария

Contact Info

Product

Resources

About