{"title":"Sintering and electrical conductivity of calcium-doped three-cation perovskite materials","authors":"Sai Ram Gajjala, Geoffrey A. Swift, Rasit Koc","doi":"10.1186/s40712-024-00147-x","DOIUrl":null,"url":null,"abstract":"<div><p>La<sub>1-x</sub>Ca<sub>x</sub>(B1,B2,B3)O<sub>3</sub> perovskite powders doped with calcium were synthesized and sintered. Calcium doping modified the A-site of the perovskite structure, while the B-site was composed of three cations in equal atomic amounts. Cations on the B-site included cobalt, chromium, iron, manganese, and nickel. Sintering temperature varied from 1200 to 1400 °C in air. Density measurements and microstructure imaging determined effect of composition on sintering. Electrical conductivity of sintered compacts was measured using the four-wire measurement method at temperatures of 300 to 900 °C in air. Electrical properties as a function of composition indicate the effect of calcium doping in combination with varied B-site substitution increases electrical conductivity and improves sintering.</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"19 1","pages":""},"PeriodicalIF":3.4000,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-024-00147-x","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Mechanical and Materials Engineering","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1186/s40712-024-00147-x","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
La1-xCax(B1,B2,B3)O3 perovskite powders doped with calcium were synthesized and sintered. Calcium doping modified the A-site of the perovskite structure, while the B-site was composed of three cations in equal atomic amounts. Cations on the B-site included cobalt, chromium, iron, manganese, and nickel. Sintering temperature varied from 1200 to 1400 °C in air. Density measurements and microstructure imaging determined effect of composition on sintering. Electrical conductivity of sintered compacts was measured using the four-wire measurement method at temperatures of 300 to 900 °C in air. Electrical properties as a function of composition indicate the effect of calcium doping in combination with varied B-site substitution increases electrical conductivity and improves sintering.
合成并烧结了掺有钙的 La1-xCax(B1,B2,B3)O3 包晶粉末。钙掺杂改变了包晶结构的 A 位，而 B 位则由三种原子量相等的阳离子组成。B 位上的阳离子包括钴、铬、铁、锰和镍。烧结温度在 1200 至 1400 °C 的空气中变化。密度测定和微观结构成像确定了成分对烧结的影响。采用四线测量法测量了烧结压块在 300 至 900 ℃ 空气中的电导率。电性能与成分的函数关系表明，钙掺杂与不同的 B 位取代相结合可提高电导率并改善烧结。
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