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آنتیمون
The behaviour for antimony substitution is of considerable technical interest and has been investigated by Eberspacher27 and Schmelz.28 If antimony is substituted for titanium in Barium titanate
, BaTi, ^ rSbvOj), no conduction can occur since the antimony is present on the B-sites in equal quantities of Sb3 + and Sb5+ and no Ti3 + ions are formed.
Substitution of antimony for barium (i.e.
At higher values of .x the antimony also substitutes on titanium sites precipitating titanium in the grain boundaries giving a resultant composition of
The commonest doping elements employed in PTC production are antimony, lanthanum, cerium, tantalum and yttrium.
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