Influence of side electric potential on hysteresis loop parameters and electric permittivity in the Rochelle salt

Fugiel, B.; Komraus, S.; Kikuta, Toshio

doi:10.1016/j.physb.2012.06.011

Cited by 5 publications

(1 citation statement)

References 26 publications

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“…Valasek in 1920, ferroelectric materials have become a research hotspot [1] and been widely used in transducers, filters, resonators, ferroelectric memories and other fields [2][3][4][5][6]. Up to date, the widely used ferroelectric materials are lead-based because of their stable and excellent ferroelectric properties [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Effect of concentration of Nd3+ on the photoluminescence and ferroelectric properties of Bi4-xNdxTi3O12 films

Shi

et al. 2021

J Mater Sci: Mater Electron

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Lead-free films of Bi4-xNdxTi3O12 were deposited on Pt(111)/Ti/SiO2/Si(100) substrate via spin-coating methods. It is shown that there are no secondary phases in Bi4-xNdxTi3O12 films and clear interfaces between the Bi4-xNdxTi3O12 films and substrates when the films are annealed at 700 ℃. And the Bi4-xNdxTi3O12 films also exhibit a blue light emission peak at 437 nm and a yellow light emission peak at 580 nm. There are narrower band gaps, higher dielectric constant and lower dielectric loss when Nd 3+ concentration varies from 0 to 0.85. And the Bi3.15Nd0.85Ti3O12 film possesses the minimum of band gap energy (2.67 eV). Moreover, Bi3.55Nd0.45Ti3O12 film exhibits a minimal leakage current density and a maximal remanent polarization, which is highly beneficial for the potential applications in multi-functional devices.

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Section: Introductionmentioning

confidence: 99%

Effect of concentration of Nd3+ on the photoluminescence and ferroelectric properties of Bi4-xNdxTi3O12 films

Shi

et al. 2021

J Mater Sci: Mater Electron

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Phenomenological analysis of positive and negative electrocaloric effects in Rochelle salt

Li,

Tao,

Xiong

et al. 2024

Applied Physics Letters

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Ferroelectrics exhibiting both positive and negative electrocaloric effects stand out as promising materials for achieving high-efficiency solid-state refrigeration. The phase transition is acknowledged as a crucial factor in designing such materials. This study investigates the electrocaloric behavior and its correlation with phase transitions in Rochelle salt single crystal using Landau thermodynamic theory. Analysis of free energy density, ferroelectric, and dielectric data uncovers a complex temperature-dependent phase transition sequence of paraelectric–ferroelectric–paraelectric. This imparts Rochelle salt single crystal with intriguing field-induced phase transition behaviors and electrocaloric responses. Pronounced positive and negative electrocaloric effects are, respectively, observed near the high-temperature and low-temperature Curie point. The opposite sign of entropy differences between the ferroelectric and the two paraelectric phases is identified as the origin of the difference in electrocaloric response. These findings not only enhance our understanding of the electrocaloric effect but also provide a design solution for materials with the coexistence of positive and negative electrocaloric effects.

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Effects of hydrogen bonds on dielectric relaxation of composites based on hydrogen-bonded ferroelectrics

2020

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Influence of side electric potential on hysteresis loop parameters and electric permittivity in the Rochelle salt

Cited by 5 publications

References 26 publications

Effect of concentration of Nd3+ on the photoluminescence and ferroelectric properties of Bi4-xNdxTi3O12 films

Effect of concentration of Nd3+ on the photoluminescence and ferroelectric properties of Bi4-xNdxTi3O12 films

Phenomenological analysis of positive and negative electrocaloric effects in Rochelle salt

Effects of hydrogen bonds on dielectric relaxation of composites based on hydrogen-bonded ferroelectrics

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