The polarized Raman spectra of deuterated potassium dihydrogen phosphate crystals with different deuterium concentrations are measured.With the increasing deuterium concentration,the Raman peaks which are assigned as ...The polarized Raman spectra of deuterated potassium dihydrogen phosphate crystals with different deuterium concentrations are measured.With the increasing deuterium concentration,the Raman peaks which are assigned as the internal vibrations of the(H/D)_(2)PO_(4)^(-)anion shift to lower wavenumbers.This red-shift contributes to the decrease in the bonding force of the P–O bond as a result of the substitution of deuterium for hydrogen.Moreover,the intensity of the strongest peak of these crystals decreases first,and reaches the minimum value while the mole percentage of the deuterium content in the crystal is about 74%.After that,the intensity increases with the increase of the deuterium concentration in the crystal.展开更多
A series of deuterated ammonium dihydrogen phosphate(DADP) crystals were grown and their structures were investigated by using powder neutron diffraction method. In the entire composition range, the deuterated level i...A series of deuterated ammonium dihydrogen phosphate(DADP) crystals were grown and their structures were investigated by using powder neutron diffraction method. In the entire composition range, the deuterated level in the crystals is lower compared with the aqueous growth solution. The deuterium segregation coefficient in the crystals decreases with increasing deuterium content of the solution. The deuterium content in the NH_4^+ group is higher than that in H_2PO_4^- group.In addition, the variations of lattice parameters are shown here.展开更多
基金The Elementary Innovation Team Foundation supported by NORINCO Group in China(2021CXTD52)The Taishan Scholars Foundation supported by Shandong Provence in China。
基金Supported by the Program for New Century Excellent Talents in University under Grant No NCET-10-0526the Natural Science Foundation of Shandong Province of China under Grant No ZR2010EM001,the Independent Innovation Foundation of Shandong University under Grant No 2012JC016the Graduate Independent Innovation Foundation of Shandong University under Grant No yzc12073.
文摘The polarized Raman spectra of deuterated potassium dihydrogen phosphate crystals with different deuterium concentrations are measured.With the increasing deuterium concentration,the Raman peaks which are assigned as the internal vibrations of the(H/D)_(2)PO_(4)^(-)anion shift to lower wavenumbers.This red-shift contributes to the decrease in the bonding force of the P–O bond as a result of the substitution of deuterium for hydrogen.Moreover,the intensity of the strongest peak of these crystals decreases first,and reaches the minimum value while the mole percentage of the deuterium content in the crystal is about 74%.After that,the intensity increases with the increase of the deuterium concentration in the crystal.
基金Project supported by the National Natural Science Foundation of China(Grant No.51402173)Shandong Provincial Natural Science Joint Foundation with Universities and Scientific Research Institution,China(Grant No.ZR2017LEM006)+1 种基金the Neutron Physics Laboratory,China Academy of Engineering Physics(Grant No.2014BB07)the Fundamental Research Funds for Central Universities,China(Grant No.FRF-TP-15-099A1)
文摘A series of deuterated ammonium dihydrogen phosphate(DADP) crystals were grown and their structures were investigated by using powder neutron diffraction method. In the entire composition range, the deuterated level in the crystals is lower compared with the aqueous growth solution. The deuterium segregation coefficient in the crystals decreases with increasing deuterium content of the solution. The deuterium content in the NH_4^+ group is higher than that in H_2PO_4^- group.In addition, the variations of lattice parameters are shown here.
