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Samarium(III) oxide (Sm 2 O 3) is a chemical compound. Samarium oxide readily forms on the surface of samarium metal under humid conditions or temperatures in excess of 150°C in dry air. Similar to rust on metallic iron, this oxide layer spalls off the surface of the metal, exposing more metal to continue the reaction.
[89] [90] [91] Samarium was thus the first chemical element to be named after a person. [84] [92] The word samaria is sometimes used to mean samarium(III) oxide, by analogy with yttria, zirconia, alumina, ceria, holmia, etc. The symbol Sm was suggested for samarium, but an alternative Sa was often used instead until the 1920s. [84] [93]
Samarium carbides are prepared by melting a graphite-metal mixture in an inert atmosphere. After the synthesis, they are unstable in air and are studied also under inert atmosphere. [13] Samarium monophosphide SmP is a semiconductor with the bandgap of 1.10 eV, the same as in silicon, and high electrical conductivity of n-type. It can be ...
Other names Promethium sesquioxide ... oxide, Samarium(III) oxide, Neptunium(III) oxide: ... oxide is a compound with the formula Pm 2 O 3. It is the most common form ...
Samarium(III) oxyiodide is an inorganic compound with the chemical formula SmOI. It can be obtained by reacting samarium(II) iodide with dry oxygen. [2] It is oxidized when heated to 335 °C in air, and starts to generate nSmOI·Sm 2 O 3 (n is 7, 4, 2 respectively) at 460 °C, 560 °C, and 640 °C, and completely transforms at 885 °C for samarium oxide. [3]
Pages in category "Samarium compounds" The following 8 pages are in this category, out of 8 total. This list may not reflect recent changes. P. Platinum–samarium; S.
1 Chemical properties. ... samarium oxide: Other cations. neodymium(III) hydroxide ... Samarium(III) hydroxide is an inorganic compound with chemical formula Sm(OH) 3.
Single crystals or polycrystals of samarium monochalcogenides can be obtained by reacting the metal with sulfur, selenium or tellurium vapors at high temperature. [1] Thin films can be obtained by magnetron sputtering [2] or electron beam physical vapor deposition, that is bombardment of samarium metal target with electrons in and appropriate gas atmosphere (e.g. hydrogen disulfide for SmS).
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