Morin transition in annealed iron implanted garnets |
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| Authors: | G Marest N Kornilios A Perez F Ravel P Gerard B Gilles M Brunel |
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| Institution: | (1) Institut de Physique Nucléaire (et IN2P3), Université Claude Bernard Lyon-1, 43, Bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France;(2) Département de Physique des Matériaux, Université Claude Bernard Lyon-1, 43, Bd du 11 November 1918, 69622 Villeurbanne Cedex, France;(3) Laboratoire d’Electronique et de Technologie de l’Informatique, C.E.N. Grenoble, 38X, 38041 Grenoble Cedex, France;(4) Laboratoire de Rayons X, C.N.R.S., 38042 Grenoble Cedex, France |
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| Abstract: | Y3Fe5O12, Y3Al5O12 and Gd3Ga5O12 single crystal granets were implanted with 1017iron.cm−2. Complementary techniques: CEMS, TEM and XRD at glancing angles have allowed to follow the behavior of implanted iron during
thermal annealings. For Y3Fe5O12 large α-Fe2O3 particles are formed after annealings and at 1200°C occurs a low temperature regime of the Morin transition at room temperature.
For Y3Al5O12, due to aluminium substitution in the precipitates, the Morin transition is only detected after an annealing at 1300°C whereas
in Gd3Ga5O12 no Morin transition is observed. |
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