Magnetoelectric response in lead-free Na0.4K0.1Bi0.5TiO3/NiFe2O4 laminated composites

Pandey, Adityanarayan H.; Varade, Pravin; Miriyala, Kumaraswamy; Sowmya, N.; Kumar, Amritesh; Arockiarajan, A.; Kulkarni, Ajit R.; Venkataramani, N.

doi:10.1016/j.mtcomm.2020.101898

Cited by 9 publications

(5 citation statements)

References 20 publications

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“…Parts a and b of Figure show the real (ε′) and imaginary (ε″) parts of the dielectric permittivity as a function of the temperature for the NKBT ceramic at different frequencies. The RT dielectric behavior of the NKBT ceramic was presented in our previous study . Two dielectric anomalies are observed near 400 and 580 K, which matches well with the earlier reports .…”

Section: Resultssupporting

confidence: 90%

“…The RT dielectric behavior of the NKBT ceramic was presented in our previous study. 37 Two dielectric anomalies are observed near 400 and 580 K, which matches well with the earlier reports. 21 The high-temperature broad dielectric peak is frequency-independent, displaying a maximum dielectric permittivity (ε′ m ) of ∼4600 at temperature T m ∼ 578 K, and the hump near ∼400 K corresponds to a FE-to-nonergodic relaxor state in a poled sample, as shown in Figure 6c.…”

Section: Phase and Microstructural Analysis Figure 2asupporting

confidence: 91%

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Excellent Electrocaloric and Energy Storage Capabilities in (Na_0.8K_0.2)_0.5Bi_0.5TiO₃ Ceramic

Varade,

Pandey,

Sowmya

et al. 2023

ACS Appl. Electron. Mater.

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A temperature-dependent polarization switching study reveals a normal ferroelectric P–E loop to an antiferroelectric double hysteresis loop in the vicinity of depolarization temperature (400 K, T d), which is believed to show a strong electrocaloric effect (ECE) and electrical energy-storage density (W rec) in (Na0.8K0.2)0.5Bi0.5TiO3 (NKBT) ceramic when measured by an indirect method. Structural analysis using X-ray diffraction, Raman spectroscopy, and transmission electron microscopy studies confirmed the coexistence of tetragonal (P4mm) and rhombohedral (R3c) phases. A temperature-dependent dielectric study has revealed a frequency dispersion around 400 K, which hints at the presence of a frustrated interaction resulting in the slowing down of polar domain dynamics below a diffuse phase transition. The high value of ECE in the lead-free NKBT ceramic is also investigated by a direct method, confirming the multifunctional nature of NKBT and its usefulness for applications in refrigeration and energy storage. A direct method of electrocaloric (EC) measurement in NKBT ceramic exhibits an adiabatic temperature change (ΔT) ∼ 1.10 K and an EC strength (ξ) ∼ 0.55 Kmm/kV near T d at an externally applied field of 20 kV/cm, which is consistent with the literature. The recoverable energy (W rec) ∼ 0.78 J/cm3 and electrical storage efficiency (η) ∼ 86% are also observed near T d when an applied field of 20 kV/cm is switched at 1 Hz. This behavior is ascribed to the delicate balance between the field-induced normal ferroelectric–antiferroelectric transition and the thermal energy needed to disrupt the frustrated interaction.

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Section: Resultssupporting

confidence: 90%

Section: Phase and Microstructural Analysis Figure 2asupporting

confidence: 91%

Excellent Electrocaloric and Energy Storage Capabilities in (Na_0.8K_0.2)_0.5Bi_0.5TiO₃ Ceramic

Varade,

Pandey,

Sowmya

et al. 2023

ACS Appl. Electron. Mater.

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“…The value of a ME (actually a 31 ) increases to ∼66 mV•cm −1 •Oe −1 for 0.3 mm BCZT thickness from a value of ∼27 mV•cm −1 •Oe −1 for 1 mm BCZT thickness. The obtained value of a ME is in the higher side compared to the reported literature in this field (table 2) [23][24][25][26][27][28][29][30]. The details of magnetostriction and magnetoelectric coefficient measurements are discussed in Note S4 (supplementary material).…”

Section: Resultsmentioning

confidence: 58%

Direct and converse piezoelectricity of thickness tuned BCZT ceramics: toward efficient bilayered magnetoelectric devices

Sasmal,

Maiti,

Maity

et al. 2024

Phys. Scr.

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Here we report the effect of thickness reduction of bulk 0.5(Ba0.7Ca0.3)TiO3-0.5Ba(Ti0.8Zr0.2)O3 (BCZT) pellet on its direct and indirect piezoelectric properties. Upon reducing the thickness to 0.3 mm, the pellet shows a very high electrostrain of ~0.7% and piezoelectric coefficient of ~353 pC/N which were ~0.14% and 258 pC/N for the 1 mm thick sample. These results have been correlated with the reduction in hardness and mutual mechanical clamping between the grains due to the reduced thickness of BCZT. Due to this improved strain sensitivity, the bilayered magnetoelectric (ME) devices of BCZT with magnetostrictive CoFe1.9Bi0.1O4 (CFBO) pellet have also shown gradually improved ME coupling coefficient (α_ME) with reduced BCZT thickness (α_ME = 27 and 66 mV·cm-1·Oe-1 for 1 and 0.3 mm BCZT thickness, respectively). This demonstrates the possible applicability of thickness tuned BCZT pellets for various technological purposes.

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“…The saturated P– E loop indicates normal ferroelectric behavior. Usually, MPB exhibits good ferroelectric properties and the reason is developing instability in the polarization state between the two ferroelectric phases, which can easily rotate the domains leading to a good piezoelectric response . The values of the coercive field (Ec) and the remnant polarization ( P r ) of pure PZT were 9.34 kV/cm and 8.31 μC/cm 2 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Strategic Design and Analysis of Energy Storage and ME Applications of Low Temperature Hybrid Microwave Sintered Electroceramic Composites

Thirumalasetty,

Krishnan,

Kota Venkata

et al. 2023

ACS Appl. Electron. Mater.

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The magnetoelectric particulate (0−3) composites (x) (PbZr 0.52 Ti 0.48 O 3 )-(1 − x) (Y 3 Fe 5 O 12 ) (where, x = 0.25, 0.5, 0.75) are synthesized by the solid-state hybrid microwave sintering technique. Multiferroic bulk ceramic capacitors have attracted immense interest in energy storage devices for pulsed power systems because of their superior temperature resistance and environment-friendliness. Even though significant attempts have been made to create massive magneto electric (ME) bulk ceramics for various applications, it still needs to be practical or scientifically recommended for investigating novel material systems with multiple applications. In this work, coexistence of optimized composition of ferroelectric and ferromagnetic continents is proposed to achieve multiple applications like energy storage and energy conversion (magnetoelectric). Ceramics made of PZT and YIG are chosen to demonstrate multiple applications that are both possible and practical. Encouragingly, a moderate energy storage efficiency of (33%) and good ME of (1.9 mv) are achieved in PZT 0.75 −YIG 0.25 and PZT 0.5 −YIG 0.5 bulk ceramics. Most importantly, the present work provides essential information for designing a series of ME compositions for nextgeneration energy storage and magnetoelectric applications.

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Magnetoelectric response in lead-free Na0.4K0.1Bi0.5TiO3/NiFe2O4 laminated composites

Cited by 9 publications

References 20 publications

Excellent Electrocaloric and Energy Storage Capabilities in (Na_0.8K_0.2)_0.5Bi_0.5TiO₃ Ceramic

Excellent Electrocaloric and Energy Storage Capabilities in (Na_0.8K_0.2)_0.5Bi_0.5TiO₃ Ceramic

Direct and converse piezoelectricity of thickness tuned BCZT ceramics: toward efficient bilayered magnetoelectric devices

Strategic Design and Analysis of Energy Storage and ME Applications of Low Temperature Hybrid Microwave Sintered Electroceramic Composites

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Magnetoelectric response in lead-free Na0.4K0.1Bi0.5TiO3/NiFe2O4 laminated composites

Cited by 9 publications

References 20 publications

Excellent Electrocaloric and Energy Storage Capabilities in (Na0.8K0.2)0.5Bi0.5TiO3 Ceramic

Excellent Electrocaloric and Energy Storage Capabilities in (Na0.8K0.2)0.5Bi0.5TiO3 Ceramic

Direct and converse piezoelectricity of thickness tuned BCZT ceramics: toward efficient bilayered magnetoelectric devices

Strategic Design and Analysis of Energy Storage and ME Applications of Low Temperature Hybrid Microwave Sintered Electroceramic Composites

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Product

Resources

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Excellent Electrocaloric and Energy Storage Capabilities in (Na_0.8K_0.2)_0.5Bi_0.5TiO₃ Ceramic

Excellent Electrocaloric and Energy Storage Capabilities in (Na_0.8K_0.2)_0.5Bi_0.5TiO₃ Ceramic