{"title":"Reliability of CaZrO3 and MgO capacitors at high temperatures","authors":"Alan Devoe, Hung Trinh, Fatih Dogan","doi":"10.1111/ijac.15180","DOIUrl":null,"url":null,"abstract":"<p>Calcium zirconate and magnesium oxide have both been found to have useful dielectric properties at high temperatures. Multilayer ceramic capacitors (MLCCs) were made with these dielectrics and platinum electrodes. The relationship between the lifespan (mean-time to failure) and applied voltage was determined using Weibull statistics. CaZrO<sub>3</sub> capacitors were tested between 550°C and 600°C while MgO capacitors were tested between 600°C and 650°C. The temperature coefficient <i>E<sub>a</sub></i> and the voltage coefficient <i>n</i> of the Prokopowicz–Vaskas equation were determined under various test conditions. Activation energies for calcium zirconate and magnesium oxide were 3.25 eV and 3.48 eV, respectively. Resistance degradation of CaZrO<sub>3</sub> and MgO capacitors, tested at 600°C and 250 V, were compared.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 5","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Applied Ceramic Technology","FirstCategoryId":"88","ListUrlMain":"https://ceramics.onlinelibrary.wiley.com/doi/10.1111/ijac.15180","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
Calcium zirconate and magnesium oxide have both been found to have useful dielectric properties at high temperatures. Multilayer ceramic capacitors (MLCCs) were made with these dielectrics and platinum electrodes. The relationship between the lifespan (mean-time to failure) and applied voltage was determined using Weibull statistics. CaZrO3 capacitors were tested between 550°C and 600°C while MgO capacitors were tested between 600°C and 650°C. The temperature coefficient Ea and the voltage coefficient n of the Prokopowicz–Vaskas equation were determined under various test conditions. Activation energies for calcium zirconate and magnesium oxide were 3.25 eV and 3.48 eV, respectively. Resistance degradation of CaZrO3 and MgO capacitors, tested at 600°C and 250 V, were compared.
期刊介绍：
The International Journal of Applied Ceramic Technology publishes cutting edge applied research and development work focused on commercialization of engineered ceramics, products and processes. The publication also explores the barriers to commercialization, design and testing, environmental health issues, international standardization activities, databases, and cost models. Designed to get high quality information to end-users quickly, the peer process is led by an editorial board of experts from industry, government, and universities. Each issue focuses on a high-interest, high-impact topic plus includes a range of papers detailing applications of ceramics. Papers on all aspects of applied ceramics are welcome including those in the following areas:
Nanotechnology applications;
Ceramic Armor;
Ceramic and Technology for Energy Applications (e.g., Fuel Cells, Batteries, Solar, Thermoelectric, and HT Superconductors);
Ceramic Matrix Composites;
Functional Materials;
Thermal and Environmental Barrier Coatings;
Bioceramic Applications;
Green Manufacturing;
Ceramic Processing;
Glass Technology;
Fiber optics;
Ceramics in Environmental Applications;
Ceramics in Electronic, Photonic and Magnetic Applications;
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