Yangkun Dai , Yibo Liu , Marek Mihalkovic , Bin Wen , Lifeng Zhang , Changzeng Fan
{"title":"CaCu1.424Fe0.576Si2","authors":"Yangkun Dai , Yibo Liu , Marek Mihalkovic , Bin Wen , Lifeng Zhang , Changzeng Fan","doi":"10.1107/S2414314625003256","DOIUrl":null,"url":null,"abstract":"<div><div>A CaCu<sub>1.424</sub>Fe<sub>0.576</sub>Si<sub>2</sub> phase was obtained during high-pressure sintering of an Si-rich quasicrystal composition prealloy with the nominal chemical composition Si<sub>61</sub>Cu<sub>30</sub>Ca<sub>7</sub>Fe<sub>2</sub>. The obtained phase crystallizes in the space group <em>I</em>4/<em>mmm</em> (No. 139), with <em>a</em> = <em>b</em> = 4.041 Å and <em>c</em> = 10.010 Å.</div></div><div><div>A CaCu<sub>1.424</sub>Fe<sub>0.576</sub>Si<sub>2</sub> phase was obtained during high-pressure sintering of an Si-rich quasicrystal composition prealloy with the nominal chemical composition Si<sub>61</sub>Cu<sub>30</sub>Ca<sub>7</sub>Fe<sub>2</sub>. The obtained phase crystallizes in the space group <em>I</em>4/<em>mmm</em> (No. 139), with <em>a</em> = <em>b</em> = 4.041 Å and <em>c</em> = 10.010 Å. It is isotypic with CaCu<sub>2</sub>Si<sub>2</sub> (<em>a</em> = <em>b</em> = 4.06 Å and <em>c</em> = 9.91 Å) [Palenzona <em>et al.</em> (1986<span><span>#</span></span>). <em>J. Less-Common Met.</em><strong>119</strong>, 199–209] and CaFe<sub>2</sub>Si<sub>2</sub> (<em>a</em> = <em>b</em> = 3.94 Å and <em>c</em> = 10.19 Å) [Hlukhyy <em>et al.</em> (2012<span><span>#</span></span>). <em>Z. Anorg. Allg. Chem.</em><strong>638</strong>, 1619–1619]. It features a co-occupancy of Cu and Fe atoms with a ratio of the refined site-occupancy factors of 0.71 (15):0.29 (15).<span><figure><span><img><ol><li><span><span>Download: <span>Download high-res image (93KB)</span></span></span></li><li><span><span>Download: <span>Download full-size image</span></span></span></li></ol></span></figure></span></div></div>","PeriodicalId":94324,"journal":{"name":"IUCrData","volume":"10 4","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IUCrData","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/org/science/article/pii/S2414314625000276","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
对标称化学成分为Si61Cu30Ca7Fe2的富si准晶成分预合金进行高压烧结，得到cuu1.424 fe0.576 si2相。得到的相在空间群I4/mmm （No. 139）中结晶，a = b = 4.041 Å， c = 10.010 Å。它与CaCu2Si2是同型的（a = b = 4.06 Å和c = 9.91 Å） [Palenzona et al.（1986▸）]。[j][常见病学报，1999,199 -209]和CaFe2Si2 （a = b = 3.94 Å和c = 10.19 Å） [Hlukhyy等（2012▸）]。z . Anorg。Allg。化学学报，2003,18(2):419 - 419。它具有Cu和Fe原子共占的特点，其精细化位占因子之比为0.71(15):0.29（15）。
A CaCu1.424Fe0.576Si2 phase was obtained during high-pressure sintering of an Si-rich quasicrystal composition prealloy with the nominal chemical composition Si61Cu30Ca7Fe2. The obtained phase crystallizes in the space group I4/mmm (No. 139), with a = b = 4.041 Å and c = 10.010 Å.
A CaCu1.424Fe0.576Si2 phase was obtained during high-pressure sintering of an Si-rich quasicrystal composition prealloy with the nominal chemical composition Si61Cu30Ca7Fe2. The obtained phase crystallizes in the space group I4/mmm (No. 139), with a = b = 4.041 Å and c = 10.010 Å. It is isotypic with CaCu2Si2 (a = b = 4.06 Å and c = 9.91 Å) [Palenzona et al. (1986#). J. Less-Common Met.119, 199–209] and CaFe2Si2 (a = b = 3.94 Å and c = 10.19 Å) [Hlukhyy et al. (2012#). Z. Anorg. Allg. Chem.638, 1619–1619]. It features a co-occupancy of Cu and Fe atoms with a ratio of the refined site-occupancy factors of 0.71 (15):0.29 (15).
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