Results 211 to 220 of about 16,603 (266)
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Alkynyl Compounds of the Rare‐earth Metals
Zeitschrift für anorganische und allgemeine Chemie, 2014AbstractConversion of the rare‐earth tetramethylaluminates [Ln(AlMe4)3] with phenylacetylene afforded the homoleptic alkynylaluminates [Ln{(μ‐C≡CPh)2AlMe2}3] [Ln = Ce (1), Er(2)]. The reaction of five equivalents of phenylacetylene with the yttrium aluminate [Y(AlMe4)3] afforded [Y{(μ‐C≡CPh)AlMe3}{(μ‐C≡CPh)2AlMe2}2] (3).
Nieland, Anja +5 more
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Thermochemistry and reactivity of rare earth metals
Physical Chemistry Chemical Physics, 1999Reactivity of the rare earth metals towards the different elements is described. Comments are mainly made on the thermodynamic data relevant to the formation of the binary compounds and to their trends. The different behaviour of the trivalent rare earths and of europium and ytterbium is underlined.
BORZONE, GABRIELLA +2 more
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Magnetism in Rare-Earth Metals and Rare-Earth Intermetallic Compounds
Physica Scripta, 1991Some of our recent local spin density electronic structure calculations for a number of ferromagnetic rare-earth systems are reviewed. A simplified model of the level densities for rare-earth (R) transition metal (M) intermetallic compounds, RmMn, is used to describe in a simple way the main features of their basic electronic structure.
Börje Johansson +3 more
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1990
Abstract Rare earth metals belong to Group IIIA of the periodic table that includes scandium, yttrium, and the lanthanide elements which are lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium. This article classifies the rare earth
K.A. Gschneidner +2 more
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Abstract Rare earth metals belong to Group IIIA of the periodic table that includes scandium, yttrium, and the lanthanide elements which are lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium. This article classifies the rare earth
K.A. Gschneidner +2 more
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Rare-earth hydrides and rare-earth oxides in and from thin films of rare-earth metals
Journal of the Less Common Metals, 1974Abstract Thin films of rare-earth metals always getter hydrogen very easily under ordinary conditions of preparation. It is shown from X-ray and electron diffraction experiments that the f.c.c. hydrides appear as single-crystal inclusions especially in the case of the yttric series (except for ytterbium).
M. Gasgnier +6 more
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Contemporary Physics, 1970
Summary A brief survey is given of the physical properties of the rare earth metals. In doing this their characteristic structural and magnetic behaviour is described first and this is then followed by an examination of the ways in which these features affect the other properties.
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Summary A brief survey is given of the physical properties of the rare earth metals. In doing this their characteristic structural and magnetic behaviour is described first and this is then followed by an examination of the ways in which these features affect the other properties.
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Microwave Absorption in Rare-Earth Metals
Journal of Applied Physics, 1965Microwave absorption phenomena have been investigated in single crystals of the rare-earth metals Tb, Dy, Ho, and Er, at frequencies of 9.44 and 35.3 Gc/sec over the temperature range 10° to 290°K. Microwave absorption occurs at the critical field transitions for the antiferromagnetic phase.
D.M.S. Bagguley, J. Liesegang
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Alloying behavior of the rare earth metals with manganese
Powder Metallurgy and Metal Ceramics, 1997General features of the phase equilibria for binary and ternary systems formed by rare earth metals (REM or R) with Mn and other d-metals and p-elements (Me) are described and reviewed. On passing from the R−Mn alloys of the light REM to those of the heavy ones, a progressive change in the shape of the phase diagrams and an increasing stability of the ...
FERRO, RICCARDO +4 more
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Rare‐Earth‐Metal Dialkynyl Dimethyl Aluminates
Chemistry – A European Journal, 2013AbstractA new class of rare‐earth‐metal alkynyl complexes has been prepared. The reactions of the tris(tetramethylaluminate)s of lanthanum, praseodymium, samarium, yttrium, holmium, and thulium, [Ln(AlMe4)3], with phenylacetylene afforded compounds [Ln{(μ‐CCPh)2AlMe2}3] (Ln=La (1), Pr (2), Sm (3), Y (4), Ho (5), Tm (6)).
Nieland, Anja +4 more
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Metallurgical Reviews, 1960
Abstract Owing to the great similarity of the properties of the rare-earth elements in aqueous solutions, and to the fact that their precipitates in such media tend to form mixed crystals, it was a very tedious and time-consuming operation to separate the compounds of the elements in the pure form before ion-exchange techniques were developed.
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Abstract Owing to the great similarity of the properties of the rare-earth elements in aqueous solutions, and to the fact that their precipitates in such media tend to form mixed crystals, it was a very tedious and time-consuming operation to separate the compounds of the elements in the pure form before ion-exchange techniques were developed.
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