Optical investigation of HoFeO3 |
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| Authors: | H Schuchert Prof Dr S Hüfner R Faulhaber |
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| Institution: | 1. Institut für Technische Physik, Technische Hochschule, Darmstadt
2. IV. Physikalisches Institut, Freie Universit?t Berlin, Boltzmannstra?e 20, 1000, Berlin 33
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| Abstract: | The absorption spectra of HoFeO3 were investigated in the near infrared spectral region at temperatures of 1.2, 4.2, 20 and 77 °K respectively. At every temperatureT≦20 °K all the absorption lines show the same splitting which is attributed to the groundstate; this splitting is (7.2±0.5) cm?1 at 20 °K and decreases to (4.9±0.8) cm?1 extrapolated to 0 °K. From these splittings the holmium-iron and the holmiumholmium interactions can be deduced. Measurements with an external magnetic field yield a magnetic moment ofμ=(7.6±0.7)μ B per holmium ion. The moments are directed at angles of ?28° and ?152° with respect to theb-axis. |
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