Effect of domain structure realignment on the pyroelectric current temperature dependence in gadolinium molybdate crystals

Гречишкин, Р. М.; Malyshkina, O. V.; Prokofieva, N. B.; Soshin, S. S.

doi:10.1080/00150190108008519

Cited by 6 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As mentioned in the literature, such behavior of pyroelectric current can be attributed to reconstruction of the sample domain structure to multidomain state before the "Curie range" [10].…”

Section: Resultsmentioning

confidence: 98%

Influence of Thermocycling on the Polarization Distribution of Doped SBN Crystals

et al. 2010

Self Cite

View full text Add to dashboard Cite

Influence of thermocycling on the polarization state in the SBN crystals doped with Eu or Rh was examined. The polarization depth profile was controlled by measuring the depth dependence of the pyroelectric coefficient by Thermal Square Wave method. The switching processes were studied using the thermal Barkhausen effect method. It has been shown that heating/cooling cycle results in essential depolarization of both studied materials.

show abstract

Section: Resultsmentioning

confidence: 98%

Influence of Thermocycling on the Polarization Distribution of Doped SBN Crystals

et al. 2010

Self Cite

View full text Add to dashboard Cite

show abstract

“…The maximum on the temperature dependence of the permittivity uniquely determines the phase transition temperature. Whereas, the maximum on the temperature dependence of the pyroelectric current can exist at lower temperatures [20]. This is due to the fact that the pyroelectric effect is observed only in samples with macroscopic polarization.…”

Section: Pyroelectric Effectmentioning

confidence: 95%

Effect of SrTiO3, KTaO-=SUB=-3-=/SUB=-, and LiTaO-=SUB=-3-=/SUB=- modifier on the dielectric properties of Ca-=SUB=-0.3-=/SUB=-Ba-=SUB=-0.7-=/SUB=-Nb-=SUB=-2-=/SUB=-O-=SUB=-6-=/SUB=- ceramics

O.V.

O.S.

Mitchenko

et al. 2022

Physics of the Solid State

View full text Add to dashboard Cite

Using the method of solid-phase synthesis, we obtained ceramic samples with a structure like tetragonal tungsten bronzes, pure Ca0.3Ba0.7Nb2O6 (CBN30) and with modifying additives SrTiO3, KTaO3, or LiTaO3. The dispersion of the permittivity in the frequency range from 1 Hz to 10 MHz, the temperature dependences of the permittivity (in the given frequency range) and the pyroelectric coefficient are studied. It is shown that if the introduction of the LiTaO3 impurity into the composition of CBN30 destabilizes the dielectric characteristics at frequencies above 100 kHz, then the SrTiO3 impurity increases both the permittivity and the pyroelectric coefficient, significantly reducing dielectric losses at low (1-10 Hz) frequencies. At the same time, both of these impurities (SrTiO3 and LiTaO3) lead to sample depolarization during heating above 150oC, while the KTaO3 impurity, which slightly increases the permittivity and pyroelectric coefficient, does not affect the stability of the polarized state during heating up to higher temperatures. Keywords: piezoelectric ceramics, barium-calcium niobate, lead-free materials, permittivity dispersion, pyroelectric effect.

show abstract

“…Максимум на температурной зависимости диэлектрической проницаемости однозначно определяет температуру фазового перехода. Тогда как, максимум на температурной зависимости пироэлектрического тока может существовать при более низких температурах [20]. Это связано с тем, что пироэлектрический эффект наблюдается только у образцов с макроскопической поляризацией.…”

Section: пироэлектрический эффектunclassified

Влияние модификаторов SrTiO-=SUB=-3-=/SUB=-, KTaO-=SUB=-3-=/SUB=- и LiTaO-=SUB=-3-=/SUB=- на диэлектрические свойства керамики Ca-=SUB=-0.3-=/SUB=-Ba-=SUB=-0.7-=/SUB=-Nb-=SUB=-2-=/SUB=-O-=SUB=-6-=/SUB=-

Малышкина¹,

Гусева²,

Митченко³

et al. 2022

Физика Твердого Тела

View full text Add to dashboard Cite

Using the method of solid-phase synthesis, we obtained ceramic samples with a structure like tetragonal tungsten bronzes, pure Ca0.3Ba0.7Nb2O6 (CBN30) and with modifying additives SrTiO3, KTaO3, or LiTaO3. The dispersion of the permittivity in the frequency range from 1 Hz to 10 MHz, the temperature dependences of the permittivity (in the given frequency range) and the pyroelectric coefficient are studied. It is shown that if the introduction of the LiTaO3 impurity into the composition of CBN30 destabilizes the dielectric characteristics at frequencies above 100 kHz, then the SrTiO3 impurity increases both the permittivity and the pyroelectric coefficient, significantly reducing dielectric losses at low (1 – 10 Hz) frequencies. At the same time, both of these impurities (SrTiO3 and LiTaO3) lead to sample depolarization during heating above 150°C, while the KTaO3 impurity, which slightly increases the permittivity and pyroelectric coefficient, does not affect the stability of the polarized state during heating up to higher temperatures.

show abstract

Effect of domain structure realignment on the pyroelectric current temperature dependence in gadolinium molybdate crystals

Cited by 6 publications

References 2 publications

Influence of Thermocycling on the Polarization Distribution of Doped SBN Crystals

Influence of Thermocycling on the Polarization Distribution of Doped SBN Crystals

Effect of SrTiO3, KTaO-=SUB=-3-=/SUB=-, and LiTaO-=SUB=-3-=/SUB=- modifier on the dielectric properties of Ca-=SUB=-0.3-=/SUB=-Ba-=SUB=-0.7-=/SUB=-Nb-=SUB=-2-=/SUB=-O-=SUB=-6-=/SUB=- ceramics

Влияние модификаторов SrTiO-=SUB=-3-=/SUB=-, KTaO-=SUB=-3-=/SUB=- и LiTaO-=SUB=-3-=/SUB=- на диэлектрические свойства керамики Ca-=SUB=-0.3-=/SUB=-Ba-=SUB=-0.7-=/SUB=-Nb-=SUB=-2-=/SUB=-O-=SUB=-6-=/SUB=-

Contact Info

Product

Resources

About