The YbAu2-xSix and CaAu2-xSix systems were studied by X-ray techniques in the range 0.7 ≤ x ≤ 1.3. The YbAuSi compound forms peritectically at 1478 K and is stable till 1168 K in its high-temperature form (EuAuGe type); below 1168 K the SrAgGe type occurs. No equiatomic compound exists in the Ca-Au-Si system. In the gold- and silicon-rich regions the two systems show similar structural behaviour: the gold-rich phases belong to the CeCu2 or the EuAuGe type, while the silicon-rich phases crystallize in the AlB2 type. The magnetic susceptibility at room temperature indicates the divalency of ytterbium in YbAuSi.
New phases in the Yb-Au-Si and Ca-Au-Si systems / M. Pani; F. Merlo; M.L. Fornasini. - In: ZEITSCHRIFT FUR KRISTALLOGRAPHIE. - ISSN 0044-2968. - STAMPA. - 214(1999), pp. 108-110.
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Titolo: | New phases in the Yb-Au-Si and Ca-Au-Si systems |
Autori: | |
Data di pubblicazione: | 1999 |
Rivista: | |
Citazione: | New phases in the Yb-Au-Si and Ca-Au-Si systems / M. Pani; F. Merlo; M.L. Fornasini. - In: ZEITSCHRIFT FUR KRISTALLOGRAPHIE. - ISSN 0044-2968. - STAMPA. - 214(1999), pp. 108-110. |
Abstract: | The YbAu2-xSix and CaAu2-xSix systems were studied by X-ray techniques in the range 0.7 ≤ x ≤ 1.3. The YbAuSi compound forms peritectically at 1478 K and is stable till 1168 K in its high-temperature form (EuAuGe type); below 1168 K the SrAgGe type occurs. No equiatomic compound exists in the Ca-Au-Si system. In the gold- and silicon-rich regions the two systems show similar structural behaviour: the gold-rich phases belong to the CeCu2 or the EuAuGe type, while the silicon-rich phases crystallize in the AlB2 type. The magnetic susceptibility at room temperature indicates the divalency of ytterbium in YbAuSi. |
Handle: | http://hdl.handle.net/11567/333202 |
Appare nelle tipologie: | 01.01 - Articolo su rivista |