Amorphous ferromagnetic oxides and process for preparing same.

摘要

This invention provides an amorphous ferromagnetic oxide represented by the formula
<Chemistry id="chema01" num="0001"><Image id="ia01" he="6" wi="43" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein A represents at least one of Bi<Sub>2</Sub>O<Sub>3'</Sub> V<Sub>2</Sub>O<Sub>5</Sub>, TeO, and GeO<Sub>2</Sub> ; M represents at least one of Mn, Fe, Co, Ni, Cu, Mg, Zn, Cd, Ca, Pb, Ba. Sr and rare earth elements; when M is not a rare earth element, m=1 and n=1; when M is earth element, m=<Sub>2</Sub> and n=3; 0<xx80, 0<y≤60 and and x+y+z=100, with the proviso that when M is Cc 0<y<60 and 40≦z≦60, and processes for preparing