Experimental Investigation on the Low-Temperature Anomalies in Dysprosium Iron Garnet (DyIG)
- Badji Mokhtar-Annaba University, Department of Physics, Laboratory L.P.S. (Algeria)
- Ivane Javakhishvili Tbilisi State University, Institute of Inorganic Chemistry and Electrochemistry (Georgia)
- University of Shanghai for Science and Technology, College of Science, Photonics Research Laboratory (China)
The anomalous physical properties of dysprosium iron garnet Dy{sub 3}Fe{sub 5}O{sub 12} or DyIG single crystals have been revisited at low temperatures. This paper presents results of experimental investigation based on specific heat, magnetization, and Faraday rotation measurements. The distinguishing features are the occurrence of two types of anomalies in the temperature dependences of some judicious quantities. The first one coincides with the previous first-order spin reorientation transition at T{sub SR} = 15 K where the iron sublattice magnetization vector M{sub Fe} changes from the <111> axis at high temperature toward the low angular phases below T{sub SR}. The second one takes place around the “low-temperature Belov point” T{sub B} = 42 K, confirming what had already been predicted previously about the paraprocess effect in this ferrimagnet. The results are compared with previous findings and discussed taking into account the coexistence of some concomitant phenomena such the magnetodielectric and Schottky effects which cause anomalies, respectively near T{sub SR} and T{sub B}.
- OSTI ID:
- 22919538
- Journal Information:
- Journal of Superconductivity and Novel Magnetism, Vol. 32, Issue 10; Conference: ICSM2018: 6. International Conference on Superconductivity and Magnetism, Antalya (Turkey), 29 Apr - 4 May 2018; Other Information: Copyright (c) 2019 Springer Science+Business Media, LLC, part of Springer Nature; Country of input: International Atomic Energy Agency (IAEA); ISSN 1557-1939
- Country of Publication:
- United States
- Language:
- English
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