Modulus spectroscopy for the detection of parallel electric responses in electroceramics  

作　　者：Till Fromling Yao Liu An-Phuc Hoang Maximillian Gehringer Sebastian Steiner Mikalai Zhuk Julia Glaum Bai-Xiang Xu 

机构地区：[1]Department of Materials and Earth Science,Technical University of Darmstadt,FG Nichtmetallisch-Anorganische Werkstoffe,Alarich-Weiss-Straße 2,64287,Darmstadt,Germany [2]Department of Materials and Earth Science,Technical University of Darmstadt,FG Mechanics of Functional Materials,Otto-Berndt-Straße 3,64287,Darmstadt,Germany [3]Department of Materials Science and Engineering,Norwegian University of Science and Technology(NTNU),Functional Materials and Materials Chemistry Group(FACET),Sem Sælands Vei 12,7491,Trondheim,Norway

出　　处：《Journal of Materiomics》2022年第3期556-569,共14页无机材料学学报（英文）

基　　金：Maximilian Gehringer,An-Phuc Hoang,and Till Fromling gratefully acknowledge the German Ministry of Education and Research(BMBF)for funding of the Young Investigator Group HTLNBT within the program“NanoMatFutur”[Grant No.03XP0146];Sebastian Steiner and Till Fromling are thankful for the financial support by the Deutsche Forschungsgemeinschaft(DFG)through project Grant No.FR 3718/1-1.Bai-Xiang Xu would like to thank the DFG(Grant No.Xu 121/6e1)for the funding.

摘　　要：Impedance spectroscopy has become one of the most versatile and essential investigation methods concerning electrical properties of materials for electronic and energy applications.Deriving knowledge about physical mechanisms,however,often demands excellent expertise in evaluating the spectra.Investigating different representations of the same data set can help elucidate the underlying physics,but this is rarely applied.In this work,the importance of using the modulus representation to identify parallel electric responses is rationalized.Those responses result from parallel conducting pathways,e.g.,at grain boundaries,or from regions with differing permittivity,e.g.,in composites.Qualitative and quantitative data can be obtained,as it is illustrated based on experimental data from electroceramics and respective physical simulation results using the finite element method.The findings should help to study intricate electric responses of materials with chemical or structural heterogeneity.

关 键 词：CERAMICS SPECTROSCOPY VERSATILE 

分 类 号：TQ174.756[化学工程—陶瓷工业] O646[化学工程—硅酸盐工业]