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  • Author: V. V. Ramamurthy x
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Abstract

Kisaura malickyi sp. n., K. bhagati sp. n. from Uttarakhand, and K. kanchenjungaensis sp. n. from Sikkim are described and illustrated in this paper.

Abstract

. This paper is a contribution to the knowledge of the Indian fauna of the genus Kisaura ROSS. Here we describe and illustrate four new species from the Indian Himalaya: Kisaura arunachalica and K. kamengensis (both from Arunachal Pradesh), K. meghalayaensis (from Meghalaya) and K. pupi (from Uttarakhand).

Abstract

The aim of this paper is to study the effect of Mg2+ doping in place of Ni in LiNiPO4 compounds synthesized by solid state reaction method. As Mg is a relatively light and cheap, and is expected to stabilize the structure, it has been considered as a substituent for Ni. The structural and conductivity studies of the substituted phases are discussed in comparison with LiNiPO4. In this study, we have proposed cation-substituted compounds, LiNi1–xMgxPO4 (x = 0, 0.05, 0.1 and 0.15) where a part of the divalent state of Ni2+ is replaced with the corresponding amount of Mg2+ and where the charge compensation is maintained by lithium deficiency. It is possible to obtain the mentioned compounds because the pristine LiNiPO4 compound is stable in ambient atmosphere, which differs considerably from the LiCoPO4 compound.