Assertion: hyperpure silicon | /r/HasProperty | prepared by a vacuum float zone process
Facets:
Source sentences:
text: Hyperpure silicon may be prepared by a vacuum float zone process and by thermal decompositions of ultra-pure trichlorosilane in an atmosphere of hydrogen.
text: Hyperpure silicon can be prepared by the thermal decomposition of ultra-pure trichlorosilane in a hydrogen atmosphere, and by a vacuum float zone process.