Assertion: germanium's impurity | /r/HasProperty | greater concentration
Facets:
Source sentences:
text: A method of making circuit elements of germanium material that comprises heating germanium oxide material containing more impurity than is required in the finished product in a graphite container in the presence of a reducing atmosphere to obtain germanium material including the impurity, melting the resulting germanium material in a graphite container, cooling the melt to progressively solidify it from one extremity to the other, whereby the impurity is of greater concentration in the last frozen portion of the resulting ingot, removing some of this last frozen portion, remelting the remainder of the ingot and progressively cooling it to redistribute the impurity, and dividing the solidified material into circuit elements.
text: The method of preparing germanium material for use in conductive devices which comprises melting a quantity of germanium material. progressively cooling the melt along an axis, whereby the impurities present are of greater concentration in the last frozen portion of the resulting ingot, removing some of the last frozen portion, remelting the remainder of the ingot, and progressively cooling it to redistribute the impurities.