| 摘要 |
An information recording/reproducing device includes a recording layer, and a recording circuit which records data to the recording layer by generating a phase change in the recording layer. The recording layer includes a first chemical compound having a spinel structure. The recording layer is AxMyX4 (0.1≦̸x≦̸2.2, 1.0≦̸y≦̸2.0), where A includes one selected from a group of Zn, Cd and Hg, M includes one selected from a group of Ti, Zr, Hf, V, Nb and Ta, and X includes O.
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