Nickel antimonide

Combined with arsenic, nickel occurs in the mineral niccolite, nickeline, ox copper nickel, NiAs. It is rarely crystalline, but when it is the form is hexagonal hardness 5-5 density 7-5. Its coppery rcdl hue is characteristic, only two other minerals, namely, copper arsenide and breihauptite or nickel antimonide, NiSb, bearing any resemblance to it. This latter mineral occurs at Andreasberg, in the Harz, is usually massive, and often associated with a considerable amount of lead sulphide. Crystals are rare hexagonal. 

Na2H10O5S sodium sulfide pentahydrate 1313-83-3 25.00 1.5800 1 3165 NiSb nickel antimonide 12035-52-8 25.00 8.7400 1... 

Individually indexed alloys or intermetallic compounds are Aluminium amalgam, 0051 Aluminium-copper-zinc alloy, 0050 Aluminium-lanthanum-nickel alloy, 0080 Aluminium-lithium alloy, 0052 Aluminium-magnesium alloy, 0053 Aluminium-nickel alloys, 0055 Aluminium-titanium alloys, 0056 Copper-zinc alloys, 4268 Ferromanganese, 4389 Ferrotitanium, 4391 Lanthanum-nickel alloy, 4678 Lead-tin alloys, 4883 Lead-zirconium alloys, 4884 Lithium-magnesium alloy, 4681 Lithium-tin alloys, 4682 Plutonium bismuthide, 0231 Potassium antimonide, 4673 Potassium-sodium alloy, 4646 Silicon-zirconium alloys, 4910... 

Stibine. Sbl h, is formed by hydrolysis of some metal antimonides or reduction (with hydrogen produced by addition of zinc and HC1) of antimony compounds, as in the Gutzeit test. It is decomposed by aqueous bases, in contrast with arsine. It reacts with metals at higher temperatures to give the antimonides. The antimonides of elements of group la. 2a, and 3a usually are stoichiometric, with antimony trivalent. With other metals, the binary compounds are essentially intermetallic. with such exceptions as the nickel series, Ni. Sb.. NiSb, Ni5Sb2 and Ni4Sb. 

The phosphides, arsenides, and antimonides of the other metals are usually dark-coloured substances, with more or less metallic lustre, and therefore conductors of electricity. Some of them occur native for example, smaltine, CoAs2, a common ore of cobalt, forming silver-white crystals copper-nickel, NiAs, red lustrous crystals, and one of the chief nickel ores speiss, a deposit formed in the pots in which smaltine and copper-nickel are fused with potassium carbonate and silica, in the preparation of smalt, a blue glass containing cobalt its formula appears to be Ni8As2. Mispickel, or arsenical pyrites, is a white lustrous substance, of the formula FeSAs. 

The freezing-point curve of nickel and antimony indicates the existence of several other antimonides, namely, Ni5Sb2, NTi4Sb, and possibly of Ni4Sb5.6 Ni3Sb may also exist.7... 

Removal of contamination by ion bombardment with inert gas ions, followed by annealing. This method can be applied to either single or poly-crystalline materials and has been found to be effective for the compound indium antimonide having a melting point of 525°C as well as for more refractory materials, ft has also been found to be effective in removing a monolayer of carbon from nickel and silicon crystals. 

The nickel arsenide (NiAs) structure is also based on an hep array in this case, the cations form the backbone lattice, and the larger anions occupy both octahedral sites. This structure, also associated with metal sulfides, selenides, tellurides, and antimonides, is only adopted for weakly ionic compounds. Since the octahedral sites are extremely close to one another, purely ionic compounds would be much too unstable due to strong anion-anion repulsions. 

T. Rosenqvist, Magnetic and Crystallographic Studies of the Higher Antimonides of Iron, Cobalt, and Nickel, Trondheim (1953). 

A peculiarity occurs for YbNiSb (Skolozdra et al. 1997). This antimonide shows a small nickel deficiency resulting in an exact composition YbNio.gSb. The deficiency has a drastic influence on the properties (see sect. 4.2). The experimental magnetic moments presented by Le Bras et al. (1995a,b) and Skolozdra et al. (1997) differ significantly. Furthermore we should keep in mind that also the lattice parameters for this antimonide differ considerably (see table 11). 

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