A method of manufacturing high purity hafnium is provided and includes the
steps of making aqueous solution of chloride of hafnium, thereafter
removing zirconium therefrom via solvent extraction, performing
neutralization treatment to obtain hafnium oxide, further performing
chlorination to obtain hafnium chloride, obtaining hafnium sponge via
reducing said hafnium chloride, and performing electron beam melting to
the hafnium sponge in order to obtain a hafnium ingot, as well as a high
purity hafnium material obtained thereby and a target and thin film
formed from such material. The present invention relates to a high purity
hafnium material with reduced zirconium content contained in the hafnium,
a target and thin film formed from such material, and the manufacturing
method thereof, and provides efficient and stable manufacturing
technology, a high purity hafnium material obtained according to such
manufacturing technology, and a target and high purity hafnium thin film
formed from such material.