91 citations · 310 across the 11 of their papers we have counts for
11 papers
Magnetoelectric Effects in the Spiral Magnets CuCl and CuBr
P. Tolédano, A. P. Ayala, A. F. G. Furtado Filho +3
The nature and symmetry of the transition mechanisms in the spin-spiral copper halides CuCl and CuBr are analyzed theoretically. The magnetoelectric effects observed in the…
Spin-phonon and magnetostriction phenomena in CaMn7O12 helimagnet probed by Raman spectroscopy
A. Nonatoa, B. A. Souza, A. P. Ayala +5
In this letter we investigated the temperature-dependent Raman spectra of CaMn7O12 helimagnet from room temperature down to 10 K. The temperature dependence of the Raman mode param…
Role of rare-earth ionic radii on the spin-phonon coupling in multiferroic ordered double perovskites
R. B. Macedo Filho, D. A. B. Barbosa, H. Reichlova +4
In this paper we investigated the influence of the rare-earth ionic radii on the spin-phonon coupling in RE2NiMnO6 double perovskites by Raman spectroscopy. Spin-phonon in dense Nd…
Spin-phonon coupling in Gd(Co1/2Mn1/2)O3 perovskite
R. X. Silva, H. Reichlova, X. Marti +4
We have investigated the temperature-dependent Raman-active phonons and the magnetic properties of Gd(Co1/2Mn1/2)O3 perovskite ceramics in the temperature range from 40 K to 300 K.…
Spin-Phonon coupling in YNiMnO double perovskite probed by Raman spectroscopy
Raimundo Bezerra Macedo Filho, Alejandro Pedro Ayala, Carlos William de Araujo Paschoal
We performed Raman spectroscopy measurements under temperature changes from 10 K up to 850 K to probe the phonon-spin coupling in YNiMnO. The spin-phonon coupling was obser…
Far Infrared Slab Lensing and Subwavelength Imaging in Crystal Quartz
R. Estevâm da Silva, R. Macêdo, T. Dumelow +3
We examine the possibility of using negative refraction stemming from the phonon response in an anisotropic crystal to create a simple slab lens with plane parallel sides, and show…