Bruno Gonano , Øystein Slagtern Fjellvåg , Gwladys Steciuk , Kenneth Marshall , Helmer Fjellvåg , Martin Valldor
{"title":"La4Co3O10 的 PVDF 氟化：La4Co3O10F2 的合成、结构和物理性质","authors":"Bruno Gonano , Øystein Slagtern Fjellvåg , Gwladys Steciuk , Kenneth Marshall , Helmer Fjellvåg , Martin Valldor","doi":"10.1016/j.scriptamat.2024.116379","DOIUrl":null,"url":null,"abstract":"<div><p>Topochemical fluorination of oxides recently gained interest as it opens the way to substantial structural modifications and drastic changes in physical properties. We present a study of La<sub>4</sub>Co<sub>3</sub>O<sub>10</sub>F<sub>2</sub>, synthesized via low-temperature topochemical methods using polyvinylidene difluoride (PVDF). Using synchrotron X-ray powder diffraction, we find the compound to crystallize in a monoclinic cell (<em>A</em>2/<em>a</em>, with <em>a</em> = 5.32969(9) Å, <em>b</em> = 5.37555(1) Å, <em>c</em> = 30.5958(6) Å and <em>β</em> = 90.994(1) °), where the fluoride anions occupy the rock-salt layer's interstitial sites, inducing a tilting of the CoO<sub>6</sub> octahedra. The physical properties of this novel compound are compared with those of the parent compound La<sub>4</sub>Co<sub>3</sub>O<sub>10</sub>, evidencing changes in resistivity and magnetism, highlighting the possibility of tuning magnetic interactions and electronic correlations through PVDF fluorination.</p></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"255 ","pages":"Article 116379"},"PeriodicalIF":5.3000,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1359646224004147/pdfft?md5=4a39ad6c25329433eb7c9b3b10408629&pid=1-s2.0-S1359646224004147-main.pdf","citationCount":"0","resultStr":"{\"title\":\"PVDF fluorination of La4Co3O10: Synthesis, structure and physical properties of La4Co3O10F2\",\"authors\":\"Bruno Gonano , Øystein Slagtern Fjellvåg , Gwladys Steciuk , Kenneth Marshall , Helmer Fjellvåg , Martin Valldor\",\"doi\":\"10.1016/j.scriptamat.2024.116379\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Topochemical fluorination of oxides recently gained interest as it opens the way to substantial structural modifications and drastic changes in physical properties. We present a study of La<sub>4</sub>Co<sub>3</sub>O<sub>10</sub>F<sub>2</sub>, synthesized via low-temperature topochemical methods using polyvinylidene difluoride (PVDF). Using synchrotron X-ray powder diffraction, we find the compound to crystallize in a monoclinic cell (<em>A</em>2/<em>a</em>, with <em>a</em> = 5.32969(9) Å, <em>b</em> = 5.37555(1) Å, <em>c</em> = 30.5958(6) Å and <em>β</em> = 90.994(1) °), where the fluoride anions occupy the rock-salt layer's interstitial sites, inducing a tilting of the CoO<sub>6</sub> octahedra. The physical properties of this novel compound are compared with those of the parent compound La<sub>4</sub>Co<sub>3</sub>O<sub>10</sub>, evidencing changes in resistivity and magnetism, highlighting the possibility of tuning magnetic interactions and electronic correlations through PVDF fluorination.</p></div>\",\"PeriodicalId\":423,\"journal\":{\"name\":\"Scripta Materialia\",\"volume\":\"255 \",\"pages\":\"Article 116379\"},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2024-09-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S1359646224004147/pdfft?md5=4a39ad6c25329433eb7c9b3b10408629&pid=1-s2.0-S1359646224004147-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Scripta Materialia\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1359646224004147\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Scripta Materialia","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1359646224004147","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
PVDF fluorination of La4Co3O10: Synthesis, structure and physical properties of La4Co3O10F2
Topochemical fluorination of oxides recently gained interest as it opens the way to substantial structural modifications and drastic changes in physical properties. We present a study of La4Co3O10F2, synthesized via low-temperature topochemical methods using polyvinylidene difluoride (PVDF). Using synchrotron X-ray powder diffraction, we find the compound to crystallize in a monoclinic cell (A2/a, with a = 5.32969(9) Å, b = 5.37555(1) Å, c = 30.5958(6) Å and β = 90.994(1) °), where the fluoride anions occupy the rock-salt layer's interstitial sites, inducing a tilting of the CoO6 octahedra. The physical properties of this novel compound are compared with those of the parent compound La4Co3O10, evidencing changes in resistivity and magnetism, highlighting the possibility of tuning magnetic interactions and electronic correlations through PVDF fluorination.
期刊介绍：
Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.
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