dysprosiumn.

/dɪˈsprəʊzɪəm/

Etymology: modern Latin, < Greek δυσπρόσιτος difficult of access; named by L. de Boisbaudran 1886, in Compt. Rend. CII. 1004, who showed that the ‘holmium oxide’ of de Cleve was a mixture containing compounds of holmium and of dysprosium (see holmia n.).

Chemistry.

A paramagnetic metallic element of the lanthanide series, present in yttria-rich minerals such as gadolinite and forming yellowish green salts in which it is trivalent. Symbol Dy; atomic number 66; atomic weight 162·5.

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dysprosium1886

1886 Jrnl. Chem. Soc. 50 667 The earths which do not show the bands of holmium but give the bands of dysprosium are relatively rich in terbia.

1906 Nature 5 Apr. 551/2 The isolation and some atomic characters of dysprosium.

1962 New Scientist 27 Dec. 724 The RCA laser of the solid-state type (using dysprosium in calcium fluoride).

1966 C. S. G. Phillips & R. J. P. Williams Inorg. Chem. II. xix. 18 Dysprosium is strongly ferromagnetic below −168° C. and exhibits a remarkable magnetic anisotropy.

1967 New Scientist 20 July 158/3 Accurately machined pole-pieces, such as could be turned out of dysprosium or holmium, would ensure better symmetry than currently used iron-free magnet coils.

This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2018).

单词	dysprosium
释义	dysprosiumn. /dɪˈsprəʊzɪəm/ Etymology: modern Latin, < Greek δυσπρόσιτος difficult of access; named by L. de Boisbaudran 1886, in Compt. Rend. CII. 1004, who showed that the ‘holmium oxide’ of de Cleve was a mixture containing compounds of holmium and of dysprosium (see holmia n.). Chemistry. A paramagnetic metallic element of the lanthanide series, present in yttria-rich minerals such as gadolinite and forming yellowish green salts in which it is trivalent. Symbol Dy; atomic number 66; atomic weight 162·5. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > dysprosium > [noun] dysprosium1886 1886 Jrnl. Chem. Soc. 50 667 The earths which do not show the bands of holmium but give the bands of dysprosium are relatively rich in terbia. 1906 Nature 5 Apr. 551/2 The isolation and some atomic characters of dysprosium. 1962 New Scientist 27 Dec. 724 The RCA laser of the solid-state type (using dysprosium in calcium fluoride). 1966 C. S. G. Phillips & R. J. P. Williams Inorg. Chem. II. xix. 18 Dysprosium is strongly ferromagnetic below −168° C. and exhibits a remarkable magnetic anisotropy. 1967 New Scientist 20 July 158/3 Accurately machined pole-pieces, such as could be turned out of dysprosium or holmium, would ensure better symmetry than currently used iron-free magnet coils. This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2018). < n.1886
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