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Title: | Electrical and magnetic properties of La2−xSrxNiO4: A tentative phase diagram |
Authors: | Sreedhar, K Rao, C N R |
Keywords: | Lanthanum Strontium Nickel Oxides |
Issue Date: | Oct-1990 |
Publisher: | Pergamon-Elsevier Science Ltd |
Citation: | Materials Research Bulletin 25(10), 1235-1242 (1990) |
Abstract: | La2−xSrxNiO4 shows a maximum in the c/a ratio around x=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 x=0.8, but is metallic at room temperature when x≥1.0. All the compositions with x≥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 La2−xSrxNiO4 and La2−xSrxNiO4, but metallicity is seen at 300K only at a much higher x value in the former system. |
Description: | Restricted Access |
URI: | https://libjncir.jncasr.ac.in/xmlui/10572/1254 |
Other Identifiers: | 0025-5408 |
Appears in Collections: | Research Papers (Prof. C.N.R. Rao) |
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