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Journal of The Less Common Metals最新文献

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The isothermal section (500 °C) of the phase diagram of the ternary system Cu-Sn-Y Cu-Sn-Y三元体系相图的等温截面(500℃)
Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90353-6
Zhuang Yinghong, Qin Can, Li Junqin
{"title":"The isothermal section (500 °C) of the phase diagram of the ternary system Cu-Sn-Y","authors":"Zhuang Yinghong,&nbsp;Qin Can,&nbsp;Li Junqin","doi":"10.1016/0022-5088(91)90353-6","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90353-6","url":null,"abstract":"<div><p>The isothermal section (500 °C) of the phase diagram of the ternary system Cu-Sn-Y (40 at.% Y or less) was investigated by X-ray diffraction, differential thermal microanalysis, optical microanalysis and electron probe microanalysis techniques. The isothermal section consists of 12 single-phase regions, 25 two-phase regions and 14 three-phase regions. Three new ternary compounds were found in this isothermal section: the θ phase (Y<sub>8</sub>Cu<sub>7</sub>Sn<sub>5</sub>), the β phase (Y<sub>3</sub>Cu<sub>4</sub>Sn<sub>3</sub>) and the γ phase (Y<sub>19</sub>Cu<sub>66</sub>Sn<sub>15</sub>). They are all non-variable compounds. The θ phase is an orthorhombic system with <span><math><mtext>a = 9.702 </mtext><mtext>A</mtext><mtext>̊</mtext></math></span>, <span><math><mtext>b = 7.285 </mtext><mtext>A</mtext><mtext>̊</mtext></math></span> and <span><math><mtext>c = 6.545 </mtext><mtext>A</mtext><mtext>̊</mtext></math></span>.</p><p>The maximum solid solubility of tin in α-Cu at 500 °C is about 9.0 at.% and that of yttrium in α-Cu at 500 °C (with 4.3 at.% Sn) is about 1.5 at.%.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 1","pages":"Pages 97-101"},"PeriodicalIF":0.0,"publicationDate":"1991-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90353-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71731605","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: 0
Ion beam deposition of silver on YBCO powder and the superconductivity of Ag-YBCO composites 银在YBCO粉末上的离子束沉积及Ag-YBCO复合材料的超导性
Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90363-9
H.R. Khan , H. Frey
{"title":"Ion beam deposition of silver on YBCO powder and the superconductivity of Ag-YBCO composites","authors":"H.R. Khan ,&nbsp;H. Frey","doi":"10.1016/0022-5088(91)90363-9","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90363-9","url":null,"abstract":"<div><p>YBa<sub>2</sub>Cu<sub>3</sub>O<sub>∼7</sub> (YBCO) powder of particle size distribution smaller than 80 μm has been coated with silver by a secondary ion beam deposition technique. Sintered Ag-YBCO composites prepared from this powder consist of homogeneously distributed orthorhombic phase, Ag<sub>2</sub>O, silver and a small amount of other phases. The composites are superconducting at about 92 K, with a sharp superconducting transition.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 1","pages":"Pages 177-182"},"PeriodicalIF":0.0,"publicationDate":"1991-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90363-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71712289","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: 2
Crystal structure of the compound CeRh1 − xGe2 + x (x = 0.325) 化合物CeRh1−xGe2 + x (x = 0.325)的晶体结构
Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90343-3
B.I. Shapiev, O.L. Sologub, Ju.D. Seropegin, O.I. Bodak, P.S. Salamakha
{"title":"Crystal structure of the compound CeRh1 − xGe2 + x (x = 0.325)","authors":"B.I. Shapiev,&nbsp;O.L. Sologub,&nbsp;Ju.D. Seropegin,&nbsp;O.I. Bodak,&nbsp;P.S. Salamakha","doi":"10.1016/0022-5088(91)90343-3","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90343-3","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 1","pages":"Pages L1-L4"},"PeriodicalIF":0.0,"publicationDate":"1991-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90343-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71731371","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: 7
The structure of LiCu2O2 with mixed-valence copper from twin-crystal data 从双晶数据研究含混价铜的LiCu2O2的结构
Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90356-9
Rolf Berger , Auke Meetsma, Sander van Smaalen, Margareta Sundberg
{"title":"The structure of LiCu2O2 with mixed-valence copper from twin-crystal data","authors":"Rolf Berger ,&nbsp;Auke Meetsma,&nbsp;Sander van Smaalen,&nbsp;Margareta Sundberg","doi":"10.1016/0022-5088(91)90356-9","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90356-9","url":null,"abstract":"<div><p>The structure of LiCu<sub>2</sub>O<sub>2</sub> was solved using two sets of X-ray diffraction twin-crystal data. Extended twinning creates virtual tetragonal symmetry. The compound crystallizes in <em>Pnma</em> (62) with unit-cell parameters <span><math><mtext>a = 5.72 </mtext><mtext>A</mtext><mtext>̊</mtext><mtext>, b = 2.86 </mtext><mtext>A</mtext><mtext>̊</mtext></math></span> and <span><math><mtext>c = 12.4 </mtext><mtext>A</mtext><mtext>̊</mtext></math></span> with a certain homogeneity range. The structure consists of LiCu<sup>II</sup>O<sub>2</sub> layers interleaved by layers of Cu<sup>I</sup> connected to oxygen in an almost linear coordination. Lithium and copper(II) have five oxygen neighbours in pyramidal arrangements that run as parallel bands through edge connections. Electron diffraction was used for characterizing the twinning.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 1","pages":"Pages 119-129"},"PeriodicalIF":0.0,"publicationDate":"1991-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90356-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71731604","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: 29
Constitutional studies of molybdenum-palladium alloys using ultra-rapidly solidified samples 用超快速凝固试样研究钼钯合金的组成
Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90350-D
R. Gürler, J. N. Pratt
{"title":"Constitutional studies of molybdenum-palladium alloys using ultra-rapidly solidified samples","authors":"R. Gürler, J. N. Pratt","doi":"10.1016/0022-5088(91)90350-D","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90350-D","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"71 1","pages":"71-78"},"PeriodicalIF":0.0,"publicationDate":"1991-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89077424","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: 10
Mössbauer and magnetic properties study of Nd2Fe14C-type compounds Mössbauer及nd2fe14c型化合物的磁性能研究
Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90352-5
F. Xing, W.W. Ho, C.L. Yang, F.S. Li
{"title":"Mössbauer and magnetic properties study of Nd2Fe14C-type compounds","authors":"F. Xing,&nbsp;W.W. Ho,&nbsp;C.L. Yang,&nbsp;F.S. Li","doi":"10.1016/0022-5088(91)90352-5","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90352-5","url":null,"abstract":"<div><p>The dependence of the Curie temperature <em>T</em><sub><em>c</em></sub> and saturation magnetization <em>σ</em><sub><em>s</em></sub> on composition was studied in the alloys Nd<sub>14</sub>Fe<sub>78 − <em>x</em></sub>T<sub><em>x</em></sub>C<sub>8</sub> (<em>T</em> ≡ <em>Co</em>, <em>Ni</em>, <em>Mn</em>, <em>Cr</em>). The effects on <em>T</em><sub><em>c</em></sub> and <em>σ</em><sub><em>s</em></sub> of the substitution of these 3d elements for iron were found to be similar to the effects on <em>T</em><sub><em>c</em></sub> and <em>σ</em><sub><em>s</em></sub> of the corresponding borides. Mössbauer spectra of the tetragonal Nd<sub>2</sub>Fe<sub>14</sub>C compound were taken at various temperatures and fitted with a set of six subspectra owing to six non-equivalent iron sites. It was found that the average hyperfine fields at 295 K and 4.2 K are 28.04 T and 32.36 T, the corresponding average iron moments being about 1.89 <em>μ</em><sub><em>B</em></sub> and 2.19 <em>μ</em><sub><em>B</em></sub>, respectively.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 1","pages":"Pages 91-96"},"PeriodicalIF":0.0,"publicationDate":"1991-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90352-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71731613","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: 6
Über die Möglichkeit einer Mischungslücke in dem Na-Ga binären System 亚联二进制系统中可能出现的缺口
Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90344-4
P. Feschotte
{"title":"Über die Möglichkeit einer Mischungslücke in dem Na-Ga binären System","authors":"P. Feschotte","doi":"10.1016/0022-5088(91)90344-4","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90344-4","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"91 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1991-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89760565","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: 3
The effect of cold deformation on the structure, texture and properties of yttrium high temperature superconducting powders and strips 冷变形对钇高温超导粉末和带的组织、织构和性能的影响
Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90347-7
V. Shamraǐ, A. Pimenov, Y. Efimov, A. A. Babaréko, F. R. Karelin, V. F. Choporov, T. Frolova, E. Myasnikova, A. Postnikov
{"title":"The effect of cold deformation on the structure, texture and properties of yttrium high temperature superconducting powders and strips","authors":"V. Shamraǐ, A. Pimenov, Y. Efimov, A. A. Babaréko, F. R. Karelin, V. F. Choporov, T. Frolova, E. Myasnikova, A. Postnikov","doi":"10.1016/0022-5088(91)90347-7","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90347-7","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"1 1","pages":"29-36"},"PeriodicalIF":0.0,"publicationDate":"1991-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88760262","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: 0
Magnetic structures of TbMn6Sn6 and HoMn6Sn6 compounds from neutron diffraction study 中子衍射研究TbMn6Sn6和HoMn6Sn6化合物的磁性结构
Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90359-C
B.Chafik El Idrissi, G. Venturini, B. Malaman, D. Fruchart
{"title":"Magnetic structures of TbMn6Sn6 and HoMn6Sn6 compounds from neutron diffraction study","authors":"B.Chafik El Idrissi, G. Venturini, B. Malaman, D. Fruchart","doi":"10.1016/0022-5088(91)90359-C","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90359-C","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"8 1","pages":"143-154"},"PeriodicalIF":0.0,"publicationDate":"1991-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79200844","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: 71
The crystal structure of the low temperature form of Co2As 低温态Co2As的晶体结构
Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90361-7
Ingrid Lindeberg, Y. Andersson
{"title":"The crystal structure of the low temperature form of Co2As","authors":"Ingrid Lindeberg, Y. Andersson","doi":"10.1016/0022-5088(91)90361-7","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90361-7","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"109 1","pages":"163-169"},"PeriodicalIF":0.0,"publicationDate":"1991-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82500733","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: 8
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