| abstract |
A hologram recording material and a hologram recording medium suitable for volume hologram recording in which high refractive index variation, flexibility, high sensitivity, low scattering, environmental resistance, durability, low dimensional variation and high multiplicity are attained. The hologram recording material contains an organic metal compound having at least two kinds of metal, oxygen and an aromatic group and having an organic metal unit wherein two aromatic groups are directly bonded to one metal, and a photopolymerizable compound. One of the above-mentioned at least two kinds of metal is Si and metal other than Si are preferably selected from a group consisting of Ti, Zr, Ge, Sn, Al and Zn. In the organic metal unit, two aromatic groups are preferably bonded to Si directly. A hologram recording medium (11) has a hologram recording material layer (21). |