Infrared and raman studies on neodymium pentaphosphate and metaphosphates |
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| Authors: | V Ramakrishnan J Kumar M Thirumavalavan F D Gnanam P Ramasamy |
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| Institution: | (1) School of Physics, Madurai Kamaraj University, 625 021 Madurai, India;(2) Crystal Growth Centre, Anna University, 600 025 Madras, India;(3) Solid State Physics Laboratory, Lucknow Road, 110 007 New Delhi, India |
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| Abstract: | The infrared and Raman spectra of crystalline samples of NdP5O14, NaNdP4O12 and KNdP4O12 are recorded. The spectra are analysed on the basis of vibrations of P=O, P-O, PO2 and P-O-P groups. The P4O
12
4−
ion has cyclic structures both in NaNdP4O12 and KNdP4O12 crystals. It has been inferred that the P-O-P bridges are stronger in metaphosphates. |
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| Keywords: | Raman spectra P4O12 P5O14 centrosymmetric |
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