Electrocaloric properties of Bi and Cu doped PLZT 9/65/35 ceramics at low electric field

Limpichaipanit, Apichart; Funsueb, Narit; Somwan, Siripong; Ngamjarurojana, Athipong; Tunkasiri, Tawee

doi:10.1016/j.ceramint.2019.10.274

Cited by 8 publications

(3 citation statements)

References 35 publications

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“…where ρ, E and E max are the density of material, applied electric field and the field corresponding to P max, respectively, and C E is the heat capacity at field E taken from the literature [50]. This equation suggests that the quantity dP dT is directly related to isothermal entropy change.…”

Section: Resultsmentioning

confidence: 99%

Optimization of energy storage and electrocaloric performance in Pb(Zr,Ti)O₃ via A-Site La and Bi Co-doping

Kumar,

Malhotra,

Nishu

et al. 2024

Smart Mater. Struct.

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Lead based ferroelectrics are the most fascinating candidates in the field of state-of-art electronic technology. Their intriguing properties are further enriched via realization of morphotropic phase boundaries. Moreover, A-site chemical substitution insights about the emergence of various exotic phases. Here, we employ the co-doping of La3+ and Bi3+ at A-site of Pb(Zr,Ti)O3 (PZT) ferroelectric to broaden the practical perspective of relaxor system. Here, we emphasize that A-site co-doping approach introduces the technologically – appealing amendments in the well-established temperature – composition phase diagram of PZT system. La3+ and Bi3+ doping favors the evolution of novel response against the thermal and field fluctuation. We employ the electro-caloric characteristics and Arrott plot as probing tool. The observation of negative electrocaloric effect and systematic reversal of Arrott lines, followed by poling effect on dielectric constant, discloses the emergence of ergodic phase as a novel phase, which further reveals that the Bi doping approach convinces the emergence of exotic characteristics in chemically modified PZT system.

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Section: Resultsmentioning

confidence: 99%

Optimization of energy storage and electrocaloric performance in Pb(Zr,Ti)O₃ via A-Site La and Bi Co-doping

Kumar,

Malhotra,

Nishu

et al. 2024

Smart Mater. Struct.

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“…[ 6–8 ] The electrocaloric effects (ECE) are characterized by an electric field‐induced temperature change (Δ T ) in a polar material, which results from a change in its entropy (Δ S ) due to the application or withdrawal of an external electric field under adiabatic conditions. Although a series of ferroelectric ceramics [ 9–13 ] and thin films [ 14–17 ] have been investigated, they still cannot satisfy the practical electrocaloric cooling application, especially at room temperature. Therefore, it is urgent to further regulate or explore ferroelectric materials to acquire giant room‐temperature ECE.…”

Section: Introductionmentioning

confidence: 99%

Designed Giant Room‐Temperature Electrocaloric Effects in Metal‐Free Organic Perovskite [MDABCO](NH₄)I₃ by Phase–Field Simulations

Gao

Shi

Wang

et al. 2021

Adv Funct Materials

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Achieving a colossal room-temperature electrocaloric effect is essential for practical solid-state refrigeration applications with low-cost and highefficiency. Here, through the design of applying external stimuli (hydrostatic pressure and misfit strain), giant room-temperature electrocaloric effects in the bulk and thin film of metal-free organic perovskite [MDABCO](NH 4 )I 3 are obtained by using a combination of thermodynamic calculations and phasefield simulations. Under the hydrostatic pressure of 1 GPa, there emerges excellent room-temperature (300 K) electrocaloric performance with the temperature change (ΔT) of 8.41 K at 30 MV m −1 and electrocaloric strength (ΔT/ΔE) of 0.63 K m MV −1 at 10 MV m −1 , respectively. The prominent electrocaloric effects of MDABCO(NH 4 )I 3 may be related to its rapid change rates of free energy barrier height. Additionally, it can be found that some stripe domains and non-180° domain walls form in the [MDABCO](NH 4 )I 3 bulk, which is consistent with the experimental results. This work not only provides new insights into organic perovskite [MDABCO](NH 4 )I 3 , but also guides for further developing to realize remarkable room-temperature electrocaloric cooling.

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“…Recently, many researchers pay attention to develop genuine lowfiring ceramics [9][10][11][12][13] instead of the low-melting glass addition method. [14][15][16][17][18] Among them, garnet vanadates 19,20 revealed the high potential to fit the most requirements of LTCC applications. The cubic structure Ca 5 Mg 4 (VO 4 ) 6 was first reported by Slobodin et al 21 Yao et al 22 first reported The Ca 5 A 4 (VO 4 ) 6 ceramics sintered at below 900 °C demonstrated good microwave dielectric properties.…”

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confidence: 99%

Microstructure and Microwave Dielectric Properties of Low-Temperature Sintering Ca_5−yLi_2yNi₄(VO₄)₆ Ceramics

Lin¹,

Lin²,

Wu³

2021

ECS J. Solid State Sci. Technol.

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The influence of sintering temperature and the quantity of lithium content on microstructure and microwave dielectric properties of the Ca5−yLi2yNi4(VO4)6 were investigated. All samples were fabricated by the solid-state reaction method with a sintering temperature of 935 °C–995 °C for 4 h. The results showed no second phases formed from the XRD pattern in all samples and dense surface morphology with a sintering temperature of 965 °C. For specimens with y = 0.10 sintered at 965 °C, the permittivity, quality factor (Qf), and temperature coefficient of resonant frequency (τ f ) were 9.7, 25,000 GHz –52 ppm/°C, respectively. Thus, these modified dielectric materials possess a high potential for applications in low-temperature co-fired ceramic.

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Electrocaloric properties of Bi and Cu doped PLZT 9/65/35 ceramics at low electric field

Cited by 8 publications

References 35 publications

Optimization of energy storage and electrocaloric performance in Pb(Zr,Ti)O₃ via A-Site La and Bi Co-doping

Optimization of energy storage and electrocaloric performance in Pb(Zr,Ti)O₃ via A-Site La and Bi Co-doping

Designed Giant Room‐Temperature Electrocaloric Effects in Metal‐Free Organic Perovskite [MDABCO](NH₄)I₃ by Phase–Field Simulations

Microstructure and Microwave Dielectric Properties of Low-Temperature Sintering Ca_5−yLi_2yNi₄(VO₄)₆ Ceramics

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Electrocaloric properties of Bi and Cu doped PLZT 9/65/35 ceramics at low electric field

Cited by 8 publications

References 35 publications

Optimization of energy storage and electrocaloric performance in Pb(Zr,Ti)O3 via A-Site La and Bi Co-doping

Optimization of energy storage and electrocaloric performance in Pb(Zr,Ti)O3 via A-Site La and Bi Co-doping

Designed Giant Room‐Temperature Electrocaloric Effects in Metal‐Free Organic Perovskite [MDABCO](NH4)I3 by Phase–Field Simulations

Microstructure and Microwave Dielectric Properties of Low-Temperature Sintering Ca5−yLi2yNi4(VO4)6 Ceramics

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Product

Resources

About

Optimization of energy storage and electrocaloric performance in Pb(Zr,Ti)O₃ via A-Site La and Bi Co-doping

Optimization of energy storage and electrocaloric performance in Pb(Zr,Ti)O₃ via A-Site La and Bi Co-doping

Designed Giant Room‐Temperature Electrocaloric Effects in Metal‐Free Organic Perovskite [MDABCO](NH₄)I₃ by Phase–Field Simulations

Microstructure and Microwave Dielectric Properties of Low-Temperature Sintering Ca_5−yLi_2yNi₄(VO₄)₆ Ceramics