Fe-Doped Barium Lanthanum Titanate as a Competitor to Other Lead-Free Piezoelectric Ceramics

Wodecka-Duś, B.; Kozielski, L.; Makowska, Jolanta; Bara, Mateusz; Adamczyk-Habrajska, Małgorzata

doi:10.3390/ma15031089

Cited by 3 publications

(1 citation statement)

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“…The previous paper widely described the influence of simultaneous modifications on electrical and dielectric properties caused by introducing the La 3+ and Fe 3+ ions to the crystal lattice [39]. In another paper, the authors described changes in the piezoelectric and elastic properties and increased barium titanate conductivity [40].…”

Section: Introductionmentioning

confidence: 99%

Impedance Spectroscopy of Fe and La-Doped BaTiO3 Ceramics

Adamczyk-Habrajska,

Wodecka-Dus,

Goryczka

et al. 2024

Crystals

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A wide range of the interesting properties of electroceramics Ba0.996La0.004Ti0.999O3 (BLT4) undoubtedly deserves differentiation and optimization. For this purpose, the corresponding donor oxide dope Fe2O3 was introduced in excess quantities into the base ceramics. In this way, an innovative ceramic material with the general formula of Ba0.996La0.004Ti1−yFeyO3 (BLTF), for y = 0.001, 0.002, 0.003, 0.004, has been produced. The crystal structure of BLTF ceramics was investigated using X-ray diffraction. The diffraction peaks in XRD confirm the formation of the tetragonal perovskite phase. The electrical properties of BLTF ceramics have been tested using impedance spectroscopy, in the frequency range of 20 Hz–2 MHz and the temperature range of 20–580 °C. To gain absolute certainty on the consistency of the measured data, the obtained impedance spectra were analyzed using the Kramers–Kronig method. The usage of an equivalent circuit, proposed by the authors, allowed grain and grain boundary resistivity to be obtained. Based on the diagram of the natural logarithm of the mentioned resistivity versus the reciprocal absolute temperature, the activation energies of the conductivity processes have been determined. The values of activation energies indicated that the admixture of iron introduced into the BLT4 ceramics played a crucial role in the conductivity of grains and intergranular borders.

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Section: Introductionmentioning

confidence: 99%

Impedance Spectroscopy of Fe and La-Doped BaTiO3 Ceramics

Adamczyk-Habrajska,

Wodecka-Dus,

Goryczka

et al. 2024

Crystals

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The Electrical Properties and In Vitro Osteogenic Properties of 3D-Printed Fe@BT/HA Piezoelectric Ceramic Scaffold

Qin,

Chen,

Sun

et al. 2024

Ceramics International

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Technology and Dielectric Properties of BLT4 Ceramics Modified with Special Glass

Wodecka-Dus,

Makowska,

Pikula

et al. 2024

Crystals

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Lead-boron special glass was doped into Ba0.996La0.004Ti0.999O3 (BLT4) ceramics in order to control the sintering process and grain growth, consequently obtaining materials with a well-developed microstructure. Changes in the microstructure resulted in a significant decrease in electrical permittivity along with a substantial increase in its frequency dispersion. Glass-doped ceramics, similar to pure BLT4, are characterized by a first-order phase transition from the ferroelectric phase to the paraelectric phase. The temperature of this transition shifts slightly towards higher values with the increase in glass dopant concentration.

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Fe-Doped Barium Lanthanum Titanate as a Competitor to Other Lead-Free Piezoelectric Ceramics

Cited by 3 publications

References 47 publications

Impedance Spectroscopy of Fe and La-Doped BaTiO3 Ceramics

Impedance Spectroscopy of Fe and La-Doped BaTiO3 Ceramics

The Electrical Properties and In Vitro Osteogenic Properties of 3D-Printed Fe@BT/HA Piezoelectric Ceramic Scaffold

Technology and Dielectric Properties of BLT4 Ceramics Modified with Special Glass

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