Structure and vanadium 3d1 polaron dynamics in the V2O5-P2O5-M2O (M=Li, Na, K) glasses

Oas, B B; Santhosh, U; Poongothai, S P

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DC Field	Value	Language
dc.contributor.author	Oas, B B	-
dc.contributor.author	Santhosh, U	-
dc.contributor.author	Poongothai, S P	-
dc.date.accessioned	2013-05-20T06:50:55Z	-
dc.date.available	2013-05-20T06:50:55Z	-
dc.date.issued	2002-04	-
dc.identifier.issn	0975-0975(Online); 0376-4710(Print)	-
dc.identifier.uri	http://hdl.handle.net/123456789/18244	-
dc.description	701-705	en_US
dc.description.abstract	Studies on the V₂O₅-P₂O₅-M₂O (M=Li, Na, K) glasses show that the associated radii of vanadium 3d¹ small polaron on a V⁴⁺ site are nearly the same but slightly less than the modifier free glass. However, the average transition metal (TM) ion separation in the glasses are nearly the same as in the network modifier free glass. The calculated values of the magnitude of exchange integral for the glasses in the range 0.021-0.023 eV as compared with that of 0.04 eV of the network modifier free 70 V₂O₅-30 P₂O₅ glass by approximating unit lattice vector, a, by polaron radius, r_p appears plausible. The g_iso-values at 300 K and 77 K, A_iso-values at 77 K and peak-to-peak line width, ∆H, at 300 K are nearly same in the glasses. However, the g_iso = values are less than that of 1.963 of the modifier free glass at 300K. The values of Fermi contact term, κ and b₂* the coefficient of vanadium 3dxy orbital are also similar in the glasses. However, the fairly lower values of κ as compared with the modifier free glass of 0.74 indicates highly "squeezed" O-VO₄...O unit in the glasses.	en_US
dc.language.iso	en_US	en_US
dc.publisher	NISCAIR-CSIR, India	en_US
dc.rights	CC Attribution-Noncommercial-No Derivative Works 2.5 India	en_US
dc.source	IJC-A Vol.41A(04) [April 2002]	en_US
dc.title	Structure and vanadium 3d¹ polaron dynamics in the V₂O₅-P₂O₅-M₂O (M=Li, Na, K) glasses	en_US
dc.type	Article	en_US
Appears in Collections:	IJC-A Vol.41A(04) [April 2002]

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