{"title":"Crystal structure of CsUCl4 · 3H2O","authors":"K. Krämer, G. Meyer, M. Karbowiak, J. Drożdżyński","doi":"10.1016/0022-5088(91)90021-U","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90021-U","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"63 1","pages":"347-352"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86823264","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}
{"title":"Kinetic study of the hafnium-hydrogen reaction","authors":"Y. Levitin, J. Bloch, M. Mintz","doi":"10.1016/0022-5088(91)90007-Q","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90007-Q","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"35 1","pages":"219-234"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73151746","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}
{"title":"Specific Heat of UOs2 and UOsIr","authors":"M Baldus, B Andraka, G.R Stewart","doi":"10.1016/0022-5088(91)90002-L","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90002-L","url":null,"abstract":"<div><p>The low temperature specific heats of C-15 structure UOs<sub>2</sub> and UOsIR have been measured in order to compare them with the systems NpOs<sub>2</sub>, a ferromagnet with <em>T</em><sub><em>Curie</em> = 7.9 K</sub>, and NpOsIr, newly discovered to be a spin fluctuation system with a specific heat γ of 375 mJ mol<sup>−1</sup> K<sup>−2</sup>. The uranium compounds, with U—U separations of 3.25 Å, less than the Hill limit of 3.4 Å, show normal metallic behavior, with <em>γ</em>(<em>UOs</em><sub>2</sub>) = 20 ± 2 mJ mol<sup>−1</sup><em>K</em><sup>−2</sup> and <em>γ</em>(<em>UOsIr</em>) = 33 ± 3 mJ mol<sup>−1</sup> K<sup>−2</sup>.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 2","pages":"Pages L11-L13"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90002-L","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71754661","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}
{"title":"Non-selective oxidation of ZrAl3","authors":"M. Paljević","doi":"10.1016/0022-5088(91)90014-U","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90014-U","url":null,"abstract":"<div><p>The oxidation of ZrAl<sub>3</sub> in dry oxygen in the temperature range 865–1073 K obeys a logarithmic rate law in the first period of reaction. An activation energy of 214 kJ mol<sup>−1</sup> has been estimated. Some time after this first period, depending on the temperature, the protective oxide film transforms to a porous one and the reaction rate increases. The oxide layer consists of α-Al<sub>2</sub>O<sub>3</sub>, tetragonal ZrO<sub>2</sub> and small amounts of monoclinic ZrO<sub>2</sub>, in contrast to the ZrO<sub>2</sub> oxide layer formed during oxidation of other phases in the Zr-Al system, where the selective oxidation of zirconium takes place.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 2","pages":"Pages 289-294"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90014-U","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71754671","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}
{"title":"Synthesis, structure and properties of a new intermetallic compound, Ca7Ni4Sn13","authors":"D. A. Vennos, M. Badding, F. Disalvo","doi":"10.1016/0022-5088(91)90020-5","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90020-5","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"57 1","pages":"339-346"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84604323","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}
{"title":"Helium Three","authors":"H.R. Khan","doi":"10.1016/0022-5088(91)90023-W","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90023-W","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 2","pages":"Page 369"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90023-W","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71754659","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}
M Kharroubi, B Gillot, R Legros, R Metz, A.C Vajpei, A Rousset
{"title":"An IR spectroscopic investigation of copper manganite CuxMn3−xO4 (O < x <1) spinels and their oxidation products","authors":"M Kharroubi, B Gillot, R Legros, R Metz, A.C Vajpei, A Rousset","doi":"10.1016/0022-5088(91)90013-T","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90013-T","url":null,"abstract":"<div><p>The IR absorption spectra of tetragonal copper manganite Cu<sub><em>x</em></sub>Mn<sub>3−<em>x</em></sub> O<sub>4</sub> spinels (<em>O</em> < <em>x</em> < 1) have singled out a discontinuity in cation distribution to occur at <em>x</em> > 0.60 in conformity with that recorded by our previous measurements and have warranted the existence of a more complex cation distribution than that proposed earlier. It has been concluded from this study that the ionic configuration for <em>x</em> <0.60, <em>i.e.</em> (<em>Cu</em><sub><em>x</em></sub><sup>+</sup><em>Mn</em><sub>1−<em>x</em></sub><sup>2+</sup>)<sub><em>A</em></sub> (<em>Mn</em><sub>2−<em>x</em></sub><sup>3+</sup><em>Mn</em><sub><em>x</em></sub><sup>4+</sup>)<sub><em>B</em></sub><em>O</em><sub>4</sub><sup>2−</sup>, changes for <em>x</em> > 0.60 to (<em>Cu</em><sub><em>x</em>−<em>y</em></sub><sup>+</sup><em>Mn</em><sub>1−<em>x</em>+<em>y</em></sub><sup>2+</sup>)<sub><em>A</em></sub>(<em>Cu</em><sub><em>y</em></sub><sup>2+</sup><em>Mn</em><sub>2−<em>x</em>−<em>y</em></sub><sup>3+</sup><em>Mn</em><sub><em>x</em></sub><sup>4+</sup>)<sub><em>B</em></sub><em>O</em><sub>4</sub><sup>2−</sup>, where <em>y</em> represents a low value (less than 0.20).</p><p>When the oxidation of Mn<sup>2+</sup> and Cu<sup>+</sup> ions is achieved below 450 °C, IR absorption measurements confirm the formation of a cation-deficient metastable spinel phase Cu<sub>1.5</sub>Mn<sub>1.5</sub>O<sub>4+δ</sub> with a 1:3 octahedral superstructure.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 2","pages":"Pages 279-287"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90013-T","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71754667","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}
{"title":"Magnetism and crystal chemistry of cerium stannides","authors":"F. Weitzer, K. Hiebl, P. Rogl","doi":"10.1016/0022-5088(91)90019-Z","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90019-Z","url":null,"abstract":"<div><p>The system Ce-Sn has been reinvestigated in the temperature range from 400 to 800 °C using X-ray powder diffraction techniques. From a characterization of its crystal structures the existence of nine binary compounds has been confirmed.</p><p>Magnetic investigation of the binary cerium stannides in the temperature range from 4.2 to 600 K revealed a systematic tendency for ferromagnetic ordering of the ceriumrich compounds up to a ratio Ce:Sn ≈ 1, followed by antiferromagnetism up to a ratio of Ce:Sn ≈ 0.4, towards interconfigurational fluctuation in the compound richest in tin, CeSn<sub>3</sub>. Candidates for heavy fermion behaviour found in the transition regions, besides CeSn<sub>3</sub>, are α-Ce<sub>5</sub>Sn<sub>3</sub> and Ce<sub>11</sub>Sn<sub>10</sub>.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 2","pages":"Pages 331-338"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90019-Z","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71754674","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}
S. Szymura, H. Bala, G. Pawłowska, Y. Rabinovich, V. Sergeev, D. V. Pokrovskii
{"title":"Modification of the magnetic properties and corrosion resistance of Nd-Fe-B permanent magnets with addition of cobalt","authors":"S. Szymura, H. Bala, G. Pawłowska, Y. Rabinovich, V. Sergeev, D. V. Pokrovskii","doi":"10.1016/0022-5088(91)90003-M","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90003-M","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"20 1","pages":"185-198"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88073133","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}
{"title":"Structure and magnetic properties of the ThMn2-type compounds RFe12−xRex (R Ce-Nd, Sm, Gd−Tm, Lu, Y, Th, U)","authors":"M Gueramian, K Yvon, F Hulliger","doi":"10.1016/0022-5088(91)90018-Y","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90018-Y","url":null,"abstract":"<div><p>The compounds RFe<sub>12−x</sub>Re<sub>x</sub> (<em>R</em> <em>Ce</em>, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Lu, Y, Th, U) were synthesized at the nominal composition <em>x</em> = 2 by arc melting from the elements followed by annealing. The poly crystalline samples were examined by X-ray powder diffraction and magnetization measurements. They all crystallize with a partially substituted tetragonal ThMn<sub>12</sub>-type structure and are magnetically ordered with Curie temperatures in the range <em>T</em><sub><em>c</em></sub> = 340(<em>U</em>)-475(<em>Sm</em>) K and magnetic moments at 4.2 K in the range 8.0(Dy)–21.4(Nd) <em>μ</em><sub><em>B</em></sub> per formula unit. Atomic coordinates are given for two members with refined compositions, PrFe<sub>10.5</sub>Re<sub>1.5</sub> and GdFe<sub>10.6</sub>Re<sub>1.4</sub>.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 2","pages":"Pages 321-330"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90018-Y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71754613","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}