Na_2Ce_4(MoO_4)_7crystal was grown by the Czochralski method.Structure refinement of XRD data confirms that the compound crystallizes in the tetragonal system I4_1/a.The transmission spectrum of the crystal in the 400-1 600 nm regions was measured,and the crystal exhibits a high transmittance in the 600-1 600 nm regions,about 77%to 79%.Ce~(3+)ions were stable in the crystal matrix,there was no valence change before and after annealing.The measurement of magnetic susceptibility in different directions showed...