摘要 |
A niobium powder comprising at least one element selected from the group consisting of rubidium, cesium, strontium, barium, scandium, yttrium, lanthanum, praseodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, hafnium, vanadium, osmium, iridium, platinum, gold, cadmium, mercury and lead; a sintered body of the niobium powder; a capacitor comprising a sintered body as one electrode, a dielectric material formed on the surface of the sintered body, and counter electrode provided on the dielectric material; an electronic circuit using said capacitor and an electronic instrument using said capacitor. |