High sensitivity to the electric field of both the phase transition temperature and the electrocaloric effect in ferroelectric NH4HSeO4

IF 2.1 4区 物理与天体物理 Q3 PHYSICS, CONDENSED MATTER Solid State Communications Pub Date : 2024-11-05 DOI:10.1016/j.ssc.2024.115747
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Abstract

The effect of an electric field on thermal and dielectric properties as well as electrocaloric response in the ferroelectric NH4HSeO4 has been studied using a universal multifunctional adiabatic calorimeter. The phase transition temperature between the ferroelectric and incommensurate phases is found to be highly sensitive to the electric field, dT2/dE ≈ 1.6 K/(kV/cm), at a low electric field strength. The intensive electrocaloric effect at E = 1.35 kV/cm observed by direct measurements, ΔTAD ≈ 0.045 K, as well as determined indirectly by analyzing the entropy-temperature-electric field phase diagram, ΔTAD ≈ 0.03 K, is quite large compared to the effects in other ferroelectrics.
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铁电 NH4HSeO4 中的相变温度和电致发光效应对电场的高度敏感性
利用通用多功能绝热热量计研究了电场对铁电 NH4HSeO4 的热和介电性质以及电热反应的影响。研究发现,在低电场强度下,铁电相与非铁电相之间的相变温度对电场高度敏感,dT2/dE ≈ 1.6 K/(kV/cm)。通过直接测量和分析熵-温度-电场相图间接测定,在 E = 1.35 kV/cm 时的强电致电效应(ΔTAD ≈ 0.045 K)与其他铁电体的效应相比是相当大的。
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来源期刊
Solid State Communications
Solid State Communications 物理-物理:凝聚态物理
CiteScore
3.40
自引率
4.80%
发文量
287
审稿时长
51 days
期刊介绍: Solid State Communications is an international medium for the publication of short communications and original research articles on significant developments in condensed matter science, giving scientists immediate access to important, recently completed work. The journal publishes original experimental and theoretical research on the physical and chemical properties of solids and other condensed systems and also on their preparation. The submission of manuscripts reporting research on the basic physics of materials science and devices, as well as of state-of-the-art microstructures and nanostructures, is encouraged. A coherent quantitative treatment emphasizing new physics is expected rather than a simple accumulation of experimental data. Consistent with these aims, the short communications should be kept concise and short, usually not longer than six printed pages. The number of figures and tables should also be kept to a minimum. Solid State Communications now also welcomes original research articles without length restrictions. The Fast-Track section of Solid State Communications is the venue for very rapid publication of short communications on significant developments in condensed matter science. The goal is to offer the broad condensed matter community quick and immediate access to publish recently completed papers in research areas that are rapidly evolving and in which there are developments with great potential impact.
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