Multiferroic perovskite ceramics: Properties and applications

H., J. L. Clabel; Rivera, Víctor Anthony García; Pinto, Alexandre H.; Marega, E.

doi:10.1016/b978-0-323-90586-2.00003-6

Cited by 9 publications

(6 citation statements)

References 114 publications

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“…As a result, a large number of dipoles are formed. 30,31 The latter can explain the appearance of the interfacial polarization above T tra .…”

Section: Resultsmentioning

confidence: 96%

“…6(a) and (b) show Nyquist plots, also known as Cole–Cole plots (− Z ′′ versus Z ′), of the MATM compound over a wide range of temperature and frequency, demonstrating a single depressed semicircle whose center lies below the real axis ( Z ′ axis). The latter is attributed to the existence of single electrical relaxation phenomena 31 and indicates a non-Debye type of relaxation. 32 The presence of a single semicircular arc suggests the dominance of the grain's contribution.…”

Section: Resultsmentioning

confidence: 98%

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Investigation of structural, morphological, and electrical conductivity study for understanding transport mechanisms of perovskite CH₃NH₃HgCl₃

et al. 2023

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“…As a result, a large number of dipoles are formed. 30,31 The latter can explain the appearance of the interfacial polarization above T tra .…”

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 98%

Investigation of structural, morphological, and electrical conductivity study for understanding transport mechanisms of perovskite CH₃NH₃HgCl₃

et al. 2023

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“…x, indicating that the emergence of the SPE state leads to a reduction in the fraction of polar nanoregions (PNRs). This reduction weakens the mutual interaction between ferroelectric domains [16][17][18]52,53]. However, the increase in the SPE phase and the decrease in PNRs had a more significant effect of sharply reducing the Pr (Figure 5c).…”

Section: Resultsmentioning

confidence: 97%

A Superparaelectric State in Relaxor Ferroelectric (Sr,Bi)TiO3-Bi(Mg,Ti)O3-Modified BaTiO3 Ceramics to Achieve High Energy Storage Performance

Yoo,

Choi,

Park

et al. 2024

Materials

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Dielectric ceramic capacitors are highly regarded for their rapid charge–discharge, high power density, and cyclability in various advanced applications. However, their relatively low energy storage density has prompted intensive research aiming at developing materials with a higher energy density. To enhance energy storage properties, research has focused on modifying ferroelectric materials to induce relaxor ferroelectricity. The present study aims to induce a superparaelectric (SPE) state in relaxor ferroelectrics near room temperature by altering BaTiO3 ferroelectric ceramics using the (Sr,Bi)TiO3-Bi(Mg0.5Ti0.5)O3 system ((1−x)BT-x(SBT-BMT)). X-ray diffraction and Raman spectroscopy analysis demonstrated a shift in the crystal structure from tetragonal to cubic with an increasing x content. Notably, the compositions (except x = 0.1) satisfied the criteria for the SPE state manifestation near room temperature. The x = 0.2 specimen displayed characteristics at the boundary between the relaxor ferroelectric and SPE phases, while x ≥ 0.3 specimens exhibited increased SPE state fractions. Despite reduced maximum polarization, x ≥ 0.3 specimens showcased impressive energy storage capabilities, attributed to the enhanced SPE state, especially for x = 0.3, with impressive characteristics: a recoverable energy density (Wrec) of ~1.12 J/cm3 and efficiency (η) of ~94% at 170 kV/cm applied field. The good stability after the charge–discharge cycles reinforces the significance of the SPE phase in augmenting energy storage in relaxor ferroelectric materials, suggesting potential applications in high-energy density storage devices.

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“…The interface is a vital factor that determines the comprehensive performance of composite materials [35][36][37]. In oxide heterostructures, semi-coherent-like interfaces are commonly observed, where bound interface charges, stress, and defects may exist.…”

Section: Resultsmentioning

confidence: 99%

A Flexible Magnetic Field Sensor Based on PZT/CFO Bilayer via van der Waals Oxide Heteroepitaxy

Pan,

Ao,

Zhou

et al. 2023

Sensors

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Magnetoelectric (ME) magnetic field sensors utilize ME effects in ferroelectric ferromagnetic layered heterostructures to convert magnetic signals into electrical signals. However, the substrate clamping effect greatly limits the design and fabrication of ME composites with high ME coefficients. To reduce the clamping effect and improve the ME response, a flexible ME sensor based on PbZr0.2Ti0.8O3 (PZT)/CoFe2O4 (CFO) ME bilayered heterostructure was deposited on mica substrates via van der Waals oxide heteroepitaxy. A saturated magnetization of 114.5 emu/cm3 was observed in the bilayers. The flexible sensor exhibited a strong ME coefficient of 6.12 V/cm·Oe. The local ME coupling has been confirmed by the evolution of the ferroelectric domain under applied magnetic fields. The flexible ME sensor possessed a stable response with high sensitivity to both AC and DC weak magnetic fields. A high linearity of 0.9988 and sensitivity of 72.65 mV/Oe of the ME sensor were obtained under flat states. The ME output and limit-of-detection under different bending states showed an inferior trend as the bending radius increased. A flexible proximity sensor has been demonstrated, indicating a promising avenue for wearable device applications and significantly broadening the potential application of the flexible ME magnetic field sensors.

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Multiferroic perovskite ceramics: Properties and applications

Cited by 9 publications

References 114 publications

Investigation of structural, morphological, and electrical conductivity study for understanding transport mechanisms of perovskite CH₃NH₃HgCl₃

Investigation of structural, morphological, and electrical conductivity study for understanding transport mechanisms of perovskite CH₃NH₃HgCl₃

A Superparaelectric State in Relaxor Ferroelectric (Sr,Bi)TiO3-Bi(Mg,Ti)O3-Modified BaTiO3 Ceramics to Achieve High Energy Storage Performance

A Flexible Magnetic Field Sensor Based on PZT/CFO Bilayer via van der Waals Oxide Heteroepitaxy

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Multiferroic perovskite ceramics: Properties and applications

Cited by 9 publications

References 114 publications

Investigation of structural, morphological, and electrical conductivity study for understanding transport mechanisms of perovskite CH3NH3HgCl3

Investigation of structural, morphological, and electrical conductivity study for understanding transport mechanisms of perovskite CH3NH3HgCl3

A Superparaelectric State in Relaxor Ferroelectric (Sr,Bi)TiO3-Bi(Mg,Ti)O3-Modified BaTiO3 Ceramics to Achieve High Energy Storage Performance

A Flexible Magnetic Field Sensor Based on PZT/CFO Bilayer via van der Waals Oxide Heteroepitaxy

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Investigation of structural, morphological, and electrical conductivity study for understanding transport mechanisms of perovskite CH₃NH₃HgCl₃

Investigation of structural, morphological, and electrical conductivity study for understanding transport mechanisms of perovskite CH₃NH₃HgCl₃