nSe N M R spectra of single-crystalline 2H-NbSez and IT-VSer have been measured in the temperature range 7-295 K. For both compounds the NMR lineshape is smngly affected by the phase transition to the charge density wave (CDW) state at = 31 K and I IO IC, respectively.The tempemure dependence of the normalized m w amplitude (order panmeter of the phase transition) is obtained from the width of the Knight shi n distributions below TO. For 2H-NbSez the type of phasing of the locally commensurate CDW state is determined from the combined analysis of the "Se and " b NMR specva measured on the same sample.
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