prov:value
| - For instance, the group III and II elements such as Al, In, B, Zn, and Cd other than Ga may be used for the crystal raw material A. The group III and II elements such as Ga, In, B, Zn, and Cd other than Al may be used for the crystal raw material B. The group V and VI elements such as As, P, S, Se, and Te other than N may be used for the crystal raw material C. Be may be used other than Mg for the
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