Sreedha, K and Rao, CNR (1990) Electrical and magnetic properties of $La_{2-x}Sr_xNiO_4$: A tentative phase diagram. In: Materials Research Bulletin, 25 (10). pp. 1235-1242.
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Abstract
$La_{2-x}Sr_xNiO_4$ shows a maximum in the$C/a$ ratio around $\times= 0.6$ up to which composition the concentration of holes is equal to that expected theoretically. The material becomes a degenerate semiconductor above a certain temperature up to$\times= 0.8$, but is metallic at room temperature when $\times\geq1.0.$ All the compositions with$\times \geq 0.05$ are paramagnetic in the 15 -300K range. Based on these measurements, an electronic phase diagram is tentatively proposed. It is noteworthy that the antiferromagnetic order disappears at low doping levels in both $La_{2-x}Sr_xNiO_4$ and $La_{2-x}Sr_xCuO_4$, but metallicity is seen at 300K only at a much higher x value in the former system.
Item Type: | Journal Article |
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Publication: | Materials Research Bulletin |
Publisher: | Elsevier B.V. |
Additional Information: | Copyright of this article belongs to Pergamon Press plc. |
Department/Centre: | Division of Chemical Sciences > Solid State & Structural Chemistry Unit |
Date Deposited: | 06 Feb 2008 |
Last Modified: | 19 Sep 2010 04:41 |
URI: | http://eprints.iisc.ac.in/id/eprint/12660 |
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