Cr3+/Mo6+/W6+ 掺杂对 Li2O-Al2O3-SiO2 玻璃中双极性弛豫和交流电导率的影响

IF 1.9 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Physica Status Solidi A-applications and Materials Science Pub Date : 2024-07-04 DOI:10.1002/pssa.202400243

Seetepalli Vijaya Krishna, Luka Pavić, Arijeta Bafti, Jana Pisk, Dhanisetti Bhadrarao, Yeti Dana Rao, Ayyagari Venkata Sekhar, Vandana Chitti Babu, Vandana Ravi Kumar, Nalluri Veeraiah

{"title":"Cr3+/Mo6+/W6+ 掺杂对 Li2O-Al2O3-SiO2 玻璃中双极性弛豫和交流电导率的影响","authors":"Seetepalli Vijaya Krishna, Luka Pavić, Arijeta Bafti, Jana Pisk, Dhanisetti Bhadrarao, Yeti Dana Rao, Ayyagari Venkata Sekhar, Vandana Chitti Babu, Vandana Ravi Kumar, Nalluri Veeraiah","doi":"10.1002/pssa.202400243","DOIUrl":null,"url":null,"abstract":"In this investigation, results of dielectric features of Li2O–Al2O3–SiO2 (LAS) glass doped with 3.0 mol% of Cr2O3, MoO3, and WO3 are presented. The investigation spans broad regions of frequency (ω) 10−2–106 Hz and temperature (T) 20–240 °C. Initial characterization of the samples by means of optical absorption spectra reveals that Cr ions do persist in Cr3+oxidation state, whereas fractions of Mo and W ions do present in Mo5+ and W5+ states in addition to predominant presence Mo6+ and W6 + ions, respectively. Infrared spectra suggest that Mo5+ and W5+ ions involve in modifying the network of the glass and induced structural disorder. Dielectric parameters and also σac are observed to be the largest for 40Li2O–5Al2O3–52SiO2:3.0 MoO3 (LASMo) glass followed by 40Li2O–5Al2O3–52SiO2:3.0 WO3 (LASW) and 40Li2O–5Al2O3–52SiO2:3.0 Cr2O3 (LASCr) glasses. Analysis of dipolar relaxation phenomena are carried out using Cole–Cole plots. Analysis of the results of σac suggests that polaronic conduction due to electron transfer between Mo5+ ↔ Mo6+ and W5+ ↔ W6+ is prevailed in case of LASMo and LASW glasses and these glasses are predicted to be useful as cathodes, whereas in LASCr glass, ionic conductivity is dominant and is suitable for electrolytes in ionic batteries.","PeriodicalId":20074,"journal":{"name":"Physica Status Solidi A-applications and Materials Science","volume":"39 1","pages":""},"PeriodicalIF":1.9000,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Impact of Cr3+/Mo6+/W6+ Doping on Dipolar Relaxation and AC Conductivity in Li2O–Al2O3–SiO2 Glasses\",\"authors\":\"Seetepalli Vijaya Krishna, Luka Pavić, Arijeta Bafti, Jana Pisk, Dhanisetti Bhadrarao, Yeti Dana Rao, Ayyagari Venkata Sekhar, Vandana Chitti Babu, Vandana Ravi Kumar, Nalluri Veeraiah\",\"doi\":\"10.1002/pssa.202400243\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this investigation, results of dielectric features of Li2O–Al2O3–SiO2 (LAS) glass doped with 3.0 mol% of Cr2O3, MoO3, and WO3 are presented. The investigation spans broad regions of frequency (ω) 10−2–106 Hz and temperature (T) 20–240 °C. Initial characterization of the samples by means of optical absorption spectra reveals that Cr ions do persist in Cr3+oxidation state, whereas fractions of Mo and W ions do present in Mo5+ and W5+ states in addition to predominant presence Mo6+ and W6 + ions, respectively. Infrared spectra suggest that Mo5+ and W5+ ions involve in modifying the network of the glass and induced structural disorder. Dielectric parameters and also σac are observed to be the largest for 40Li2O–5Al2O3–52SiO2:3.0 MoO3 (LASMo) glass followed by 40Li2O–5Al2O3–52SiO2:3.0 WO3 (LASW) and 40Li2O–5Al2O3–52SiO2:3.0 Cr2O3 (LASCr) glasses. Analysis of dipolar relaxation phenomena are carried out using Cole–Cole plots. Analysis of the results of σac suggests that polaronic conduction due to electron transfer between Mo5+ ↔ Mo6+ and W5+ ↔ W6+ is prevailed in case of LASMo and LASW glasses and these glasses are predicted to be useful as cathodes, whereas in LASCr glass, ionic conductivity is dominant and is suitable for electrolytes in ionic batteries.\",\"PeriodicalId\":20074,\"journal\":{\"name\":\"Physica Status Solidi A-applications and Materials Science\",\"volume\":\"39 1\",\"pages\":\"\"},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2024-07-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physica Status Solidi A-applications and Materials Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1002/pssa.202400243\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physica Status Solidi A-applications and Materials Science","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/pssa.202400243","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

摘要

本研究介绍了掺杂 3.0 mol% Cr2O3、MoO3 和 WO3 的 Li2O-Al2O3-SiO2 (LAS) 玻璃的介电特性结果。研究跨越了频率 (ω) 10-2-106 Hz 和温度 (T) 20-240 °C 的宽广区域。通过光学吸收光谱对样品进行的初步表征显示，铬离子始终处于 Cr3+ 氧化态，而 Mo 和 W 离子除了主要存在 Mo6+ 和 W6+ 离子外，还分别处于 Mo5+ 和 W5+ 状态。红外光谱表明，Mo5+ 和 W5+ 离子参与了玻璃网络的改变，并导致结构紊乱。据观察，40Li2O-5Al2O3-52SiO2:3.0 MoO3（LASMo）玻璃的介电参数和σac 最大，其次是 40Li2O-5Al2O3-52SiO2:3.0WO3（LASW）和 40Li2O-5Al2O3-52SiO2:3.0Cr2O3（LASCr）玻璃。利用科尔-科尔图分析了偶极弛豫现象。对σac结果的分析表明，在LASMo和LASW玻璃中，由于Mo5+ ↔ Mo6+和W5+ ↔ W6+之间的电子转移，极性传导占主导地位，预计这些玻璃可用作阴极，而在LASCr玻璃中，离子传导占主导地位，适合用作离子电池的电解质。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Impact of Cr3+/Mo6+/W6+ Doping on Dipolar Relaxation and AC Conductivity in Li2O–Al2O3–SiO2 Glasses

In this investigation, results of dielectric features of Li2O–Al2O3–SiO2 (LAS) glass doped with 3.0 mol% of Cr2O3, MoO3, and WO3 are presented. The investigation spans broad regions of frequency (ω) 10−2–106 Hz and temperature (T) 20–240 °C. Initial characterization of the samples by means of optical absorption spectra reveals that Cr ions do persist in Cr3+oxidation state, whereas fractions of Mo and W ions do present in Mo5+ and W5+ states in addition to predominant presence Mo6+ and W6 + ions, respectively. Infrared spectra suggest that Mo5+ and W5+ ions involve in modifying the network of the glass and induced structural disorder. Dielectric parameters and also σac are observed to be the largest for 40Li2O–5Al2O3–52SiO2:3.0 MoO3 (LASMo) glass followed by 40Li2O–5Al2O3–52SiO2:3.0 WO3 (LASW) and 40Li2O–5Al2O3–52SiO2:3.0 Cr2O3 (LASCr) glasses. Analysis of dipolar relaxation phenomena are carried out using Cole–Cole plots. Analysis of the results of σac suggests that polaronic conduction due to electron transfer between Mo5+ ↔ Mo6+ and W5+ ↔ W6+ is prevailed in case of LASMo and LASW glasses and these glasses are predicted to be useful as cathodes, whereas in LASCr glass, ionic conductivity is dominant and is suitable for electrolytes in ionic batteries.

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

Physica Status Solidi A-applications and Materials Science 工程技术-材料科学：综合

CiteScore

3.70

自引率

5.00%

发文量

393

审稿时长

2 months

期刊介绍： The physica status solidi (pss) journal group is devoted to the thorough peer review and the rapid publication of new and important results in all fields of solid state and materials physics, from basic science to applications and devices. Among the largest and most established international publications, the pss journals publish reviews, letters and original articles, as regular content as well as in special issues and topical sections.