Exchange interactions in rare-earth iron garnets |
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| Institution: | 1. STMicroelectronics, 850 Rue Jean Monnet, 38920 Crolles, France;2. Univ. Grenoble Alpes, F-38000 Grenoble, France;3. CNRS, LTM, MINATEC Campus, F-38054 Grenoble, France;4. CEA, INAC (SP2M/LEMMA), F-38000 Grenoble, France;5. CEA, LETI, MINATEC Campus, F-38054 Grenoble, France;1. North China Electric Power University, Baoding 071003, China;2. North China Electric Power University, Beijing 102206, China |
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| Abstract: | Exchange parameters previously reported for YbIG, ErIG and EuIG are compared. One of the three possible sets of parameters found for ErIG is shown to agree fairly well with the EuIG parameters and can also be fitted using an exchange potential. Tentative exchange potential parameters associated with the two types of superexchange pathways which couple the rare-earth ion to neighboring iron ions are obtained. A new method for calculating the YbIG exchange parameters is described and the parameters are compared with those reported previously. |
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