钐和铕掺杂Sr(La1-xLnx)2WO7化合物的热容和热力学函数

IF 0.5 Q4 CHEMISTRY, MULTIDISCIPLINARY Eurasian Chemico-Technological Journal Pub Date : 2021-03-25 DOI:10.18321/ECTJ1031
D. Sadyrbekov, M. Bissengaliyeva, D. B. Gogol, N. Bekturganov, Shynar T. Taimassova
{"title":"钐和铕掺杂Sr(La1-xLnx)2WO7化合物的热容和热力学函数","authors":"D. Sadyrbekov, M. Bissengaliyeva, D. B. Gogol, N. Bekturganov, Shynar T. Taimassova","doi":"10.18321/ECTJ1031","DOIUrl":null,"url":null,"abstract":"Samples based on strontium, lanthanum and tungsten with the general formula of Sr(La1-xLnx)2WO7 doped with samarium and europium at 1 and 3 at.% were synthesized by the solid-phase method at temperatures up to 1200 °C. The crystal structure of the samples was confirmed by X-ray powder diffraction. A full-profile refinement of the structure of compounds related to monoclinic syngony with the space group P1121/b was performed. The admixture phase is a compound of the Sr3Ln2W2O12 type with a trigonal system and space group R3-C. Based on the results of structure refinement, the ratio of the main compound and the admixture phase in the samples was determined to introduce corrections during measurements. Using adiabatic calorimetry we measured the heat capacity of the samples and found the thermodynamic functions of main compounds over the range of  5‒320 K. Anomalies were detected in the heat capacity of the samples below 15 K, and we calculated the excess and lattice heat capacity for these anomalies by means of linearization methods.","PeriodicalId":11795,"journal":{"name":"Eurasian Chemico-Technological Journal","volume":null,"pages":null},"PeriodicalIF":0.5000,"publicationDate":"2021-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Heat Capacity and Thermodynamic Functions of Sr(La1-xLnx)2WO7 Compounds Doped with Samarium and Europium\",\"authors\":\"D. Sadyrbekov, M. Bissengaliyeva, D. B. Gogol, N. Bekturganov, Shynar T. Taimassova\",\"doi\":\"10.18321/ECTJ1031\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Samples based on strontium, lanthanum and tungsten with the general formula of Sr(La1-xLnx)2WO7 doped with samarium and europium at 1 and 3 at.% were synthesized by the solid-phase method at temperatures up to 1200 °C. The crystal structure of the samples was confirmed by X-ray powder diffraction. A full-profile refinement of the structure of compounds related to monoclinic syngony with the space group P1121/b was performed. The admixture phase is a compound of the Sr3Ln2W2O12 type with a trigonal system and space group R3-C. Based on the results of structure refinement, the ratio of the main compound and the admixture phase in the samples was determined to introduce corrections during measurements. Using adiabatic calorimetry we measured the heat capacity of the samples and found the thermodynamic functions of main compounds over the range of  5‒320 K. Anomalies were detected in the heat capacity of the samples below 15 K, and we calculated the excess and lattice heat capacity for these anomalies by means of linearization methods.\",\"PeriodicalId\":11795,\"journal\":{\"name\":\"Eurasian Chemico-Technological Journal\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2021-03-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Eurasian Chemico-Technological Journal\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.18321/ECTJ1031\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Eurasian Chemico-Technological Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.18321/ECTJ1031","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

摘要

在高达1200°C的温度下,通过固相法合成了基于锶、镧和钨的样品,其通式为Sr(La1-xLnx)2WO7,掺杂有1和3 at.%的钐和铕。通过X射线粉末衍射证实了样品的晶体结构。对与空间群为P1121/b的单斜合成气有关的化合物的结构进行了全面的细化。混合相是具有三角体系和空间基团R3-C的Sr3Ln2W2O12型化合物。基于结构细化的结果,确定了样品中主要化合物和混合相的比例,以在测量过程中引入校正。使用绝热量热法,我们测量了样品的热容,并发现主要化合物在5-320K范围内的热力学函数。在低于15K的样品的热容中检测到异常,我们通过线性化方法计算了这些异常的过剩热容和晶格热容。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Heat Capacity and Thermodynamic Functions of Sr(La1-xLnx)2WO7 Compounds Doped with Samarium and Europium
Samples based on strontium, lanthanum and tungsten with the general formula of Sr(La1-xLnx)2WO7 doped with samarium and europium at 1 and 3 at.% were synthesized by the solid-phase method at temperatures up to 1200 °C. The crystal structure of the samples was confirmed by X-ray powder diffraction. A full-profile refinement of the structure of compounds related to monoclinic syngony with the space group P1121/b was performed. The admixture phase is a compound of the Sr3Ln2W2O12 type with a trigonal system and space group R3-C. Based on the results of structure refinement, the ratio of the main compound and the admixture phase in the samples was determined to introduce corrections during measurements. Using adiabatic calorimetry we measured the heat capacity of the samples and found the thermodynamic functions of main compounds over the range of  5‒320 K. Anomalies were detected in the heat capacity of the samples below 15 K, and we calculated the excess and lattice heat capacity for these anomalies by means of linearization methods.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Eurasian Chemico-Technological Journal
Eurasian Chemico-Technological Journal CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
1.10
自引率
20.00%
发文量
6
审稿时长
20 weeks
期刊介绍: The journal is designed for publication of experimental and theoretical investigation results in the field of chemistry and chemical technology. Among priority fields that emphasized by chemical science are as follows: advanced materials and chemical technologies, current issues of organic synthesis and chemistry of natural compounds, physical chemistry, chemical physics, electro-photo-radiative-plasma chemistry, colloids, nanotechnologies, catalysis and surface-active materials, polymers, biochemistry.
期刊最新文献
Technology for Isolation Essential Oil from the Buds of Populus balsamifera L. Obtaining Edible Pullulan-based Films with Antimicrobial Properties The Synthesis and in vitro Study of 9-fluorenylmethoxycarbonyl Protected Non-Protein Amino Acids Antimicrobial Activity Optimization of the Porous Structure of Carbon Electrodes for Hybrid Supercapacitors with a Redox Electrolyte Based on Potassium Bromide Influence of Annealing Time on the Optical and Electrical Properties of Tin Dioxide-Based Coatings
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1