Terahertz response of gadolinium gallium garnet (GGG) and gadolinium scandium gallium garnet (SGGG)
نویسندگان
چکیده
منابع مشابه
Interplay of disorder and geometrical frustration in doped gadolinium gallium garnet.
The geometrically frustrated triangular antiferromagnet Gadolinium Gallium Garnet (Gd3Ga5O12 or GGG) exhibits a rich mix of short-range order and isolated quantum states. We investigate the effects of up to 1% neodymium substitution for gallium on the ac magnetic response at temperatures below 1 K in both the linear and nonlinear regimes. Substitutional disorder actually drives the system towar...
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The R-lines of the Mn4+ fluorescence. associated with 2~ -, 4~~ transitions in gadolinium gallium garnet exhibits large broadening as compared with other ions with d3 shell. The laser excitation and fluorescence spectra without magnetic field show that this i s partially inhomogeneous broadening related t o presence of charge-compensating c a 2 + ions. Remaining part of the broadening is due to...
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The photosensitive properties of a centrosymmetric gadolinium gallium garnet crystal doped with calcium are investigated at room temperature. Elementary holograms can be recorded over a wide range of wavelengths in the visible spectral range. The photosensitive properties are studied experimentally using beam coupling and angular response experiments. Mixed absorption and refractive-index grati...
متن کاملField induced magnetic order in the frustrated magnet Gadolinium Gallium Garnet
Gd3Ga5O12, (GGG), has an extraordinary magnetic phase diagram, where no long range order is found down to 25 mK despite ΘCW ≈2 K. However, long range order is induced by an applied field of around 1 T. Motivated by recent theoretical developments and the experimental results for a closely related hyperkagome system, we have performed neutron diffraction measurements on a single crystal sample o...
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The problem of deducing the values of the exchange integrals in yttrium and gadolinium iron garnet from measurements of the magnetization and the magnetic contribution to the specific heat at low temperatures is considered. For these garnets the spin-wave normal modes can be found by solving the semiclassical equations of motion which give rise to a set of n simultaneous linear equations, where...
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ژورنال
عنوان ژورنال: Journal of Applied Physics
سال: 2020
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.5131366