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On the Possibility of Ferromagnetism in Nanosized CuCl2 纳米CuCl2具有铁磁性的可能性
Journal of Nanoparticles Pub Date : 2013-01-09 DOI: 10.1155/2013/756473
F. Owens
{"title":"On the Possibility of Ferromagnetism in Nanosized CuCl2","authors":"F. Owens","doi":"10.1155/2013/756473","DOIUrl":"https://doi.org/10.1155/2013/756473","url":null,"abstract":"Copper chloride consists of parallel chains of CuCl2. The chains are sufficiently far apart such that the electronic and magnetic properties of CuCl2 have been approximated as arising from isolated chains. Density functional theory using the LANL2DZ/6-31G* basis set has been used to calculate the total energy of CuCl2 chains having nanometer length. The calculations, which are performed as a function of chain length, predict that chains having ferromagnetic order have a lower energy than chains with no order. Calculations of the band gap as a function of length for the ferromagnetic chains indicate that chains greater than 6 nm may be semiconducting suggesting that nanosized CuCl2 chains have the potential to be magnetic semiconductors.","PeriodicalId":16507,"journal":{"name":"Journal of Nanoparticles","volume":"2 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82101063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Studying the Effects of Adding Silica Sand Nanoparticles on Epoxy Based Composites 纳米二氧化硅砂对环氧基复合材料的影响研究
Journal of Nanoparticles Pub Date : 2013-01-08 DOI: 10.1155/2013/603069
T. Ahmad, O. Mamat, R. Ahmad
{"title":"Studying the Effects of Adding Silica Sand Nanoparticles on Epoxy Based Composites","authors":"T. Ahmad, O. Mamat, R. Ahmad","doi":"10.1155/2013/603069","DOIUrl":"https://doi.org/10.1155/2013/603069","url":null,"abstract":"The research about the preparation of submicron inorganic particles, once conducted in the past decade, is now leading to prepare polymer matrix composite (PMC) reinforced with nanofillers. The objective of present research is to study the modified effects of reinforcement dispersion of nanoparticle silica in epoxy resin on the physical properties, mechanical and thermal behaviour, and the microstructure of resultant composites. Stirrer mixing associated with manual mixing of silica sand nanoparticles (developed in our earlier research) (Ahmad and Mamat, 2012) into epoxy was followed by curing being the adopted technique to develop the subject nanocomposites. Experimental values showed that 15 wt.% addition of silica sand nanoparticles improves Young’s modulus of the composites; however, a reduction in tensile strength was also observed. Number of holes and cavities produced due to improper mixing turn out to be the main cause of effected mechanical properties. Addition of silica sand nanoparticles causes a reduction in degree of crystallinity of the nanocomposites as being observed in differential scanning calorimetry (DSC) analysis.","PeriodicalId":16507,"journal":{"name":"Journal of Nanoparticles","volume":"314 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2013-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84737468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 42
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