Patent Number: 054540216
Section: claims

1. An x-ray mirror for reflecting x-ray radiation comprising a reflecting material formed on a substrate and comprising Pt and at least one substance selected from Mo, Ru, Rh, Pd, Ta, W and Au, wherein the reflecting material has an atomic composition expressed by a general formula Pt.sub.1-x M.sub.x, wherein M represents the substance and the value x satisfies the formula: 0.005.ltoreq..times..ltoreq.0.10. 2. An x-ray mirror for reflecting x-ray radiation comprising a reflecting material formed on a substrate and made of an alloy having an average grain size under 150 .ANG.. 3. An x-ray mirror according to claim 2, the alloy has an atomic composition expressed by a general formula Pt.sub.1-x M.sub.x, wherein M is at least one substance selected from Mo, Ru, Rh, Pd, Ta, W and Au and the value x satisfies the formula: 0.005.ltoreq..times..ltoreq.0.10. 4. An x-ray reflecting material for reflecting x-ray radiation comprising Pt and at least one substance selected from Mo, Ru, Rh, Pd, Ta, W and Au, wherein said x-ray reflecting material has an atomic composition expressed by a general formula Pt.sub.1-x M.sub.x, wherein M represents the substance and the value x satisfies the formula: 0.005.ltoreq..times..ltoreq.0.10.