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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2003, Volume 78, Issue 2, Pages 99–102
(Mi jetpl2497)
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This article is cited in 17 scientific papers (total in 17 papers)
Magnetic and magneto-lattice dynamics in GdMn$_2$O$_5$
E. I. Golovenchits, V. A. Sanina Ioffe Physico-Technical Institute, Russian Academy of Sciences, St. Petersburg
Abstract:
The dynamics of magnetoelectric RMn$_2$O$_5$ crystals (R=Eu and Gd) was studied in the frequency and temperature ranges 20-300 GHz and 5-50 K, respectively. The crystals possessed magnetic and ferroelectric long-range order and had close transition temperatures, $T_{N.C.}\simeq 36$ and 30 K for R=Eu and Gd, respectively. Mixed magneto-lattice excitations were observed in GdMn$_2$O$_5$; the excitations were most intense near the transition temperature $T\simeq 30$ K at frequencies close to the antiferromagnetic resonance frequencies of the Mn-subsystem. Along with the antiferromagnetic resonance of the Mn-subsystem, the ferromagnetic resonance of the Gd-subsystem was observed in GdMn$_2$O$_5$ in an external magnetic field. No such dynamics was characteristic of EuMn$_2$O$_5$.
Received: 26.06.2003
Citation:
E. I. Golovenchits, V. A. Sanina, “Magnetic and magneto-lattice dynamics in GdMn$_2$O$_5$”, Pis'ma v Zh. Èksper. Teoret. Fiz., 78:2 (2003), 99–102; JETP Letters, 78:2 (2003), 88–91
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https://www.mathnet.ru/eng/jetpl2497 https://www.mathnet.ru/eng/jetpl/v78/i2/p99
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Abstract page: | 156 | Full-text PDF : | 65 | References: | 62 |
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