Mechanochemical synthesis of rutile-type CrMO{sub 4} (M=V, Sb) and their solid solutions

Grinding a mixture of hydrous amorphous chromium oxide (Cr{sub 2}O{sub 3}.nH{sub 2}O), vanadium oxide (V{sub 2}O{sub 5}) and antimony oxide (Sb{sub 2}O{sub 5}) was conducted by using a planetary ball mill, to investigate their mechanochemical reactions to form chromium vanadium oxide (CrVO{sub 4}) and chromium antimony oxide (CrSbO{sub 4}). The synthesis reactions proceed with an increase in grinding periods of time. The ground samples consist of agglomerates with particle size of about ten nanometers. The synthesized CrVO{sub 4} sample exhibits a rutile-type tetragonal crystal structure, which is a high pressure phase. Additionally, solid solutions, CrV{sub 1-x}Sb{sub x}O{sub 4} (x=0{approx}1, {delta}x=0.25), have been synthesized mechanochemically from the mixtures of Cr{sub 2}O{sub 3}.nH{sub 2}O, V{sub 2}O{sub 5} and Sb{sub 2}O{sub 5}.