We discuss the interchange of the acoustical peak intensity between the Stokes and the anti-Stokes side of Brillouin light scattering spectra in an asymmetric Fe(20A)/Cr(20A)/Fe(20A)/Cr(9A)/Fe(100A) ferromagnetic trilayer which takes place at a critical applied magnetic field H = 0.4 kOe. This sudden interchange is due to a first-order magnetic phase transition involving the outermost Fe layer static magnetization. It is shown that this effect is a consequence of a reversalof the sense of precession of dynamic magnetization in the outermost Fe layer.
Stokes anti-Stokes peak intensity interchange across a first-order phase transition
ZIVIERI, Roberto;VAVASSORI, Paolo;GIOVANNINI, Loris;NIZZOLI, Fabrizio;
2002
Abstract
We discuss the interchange of the acoustical peak intensity between the Stokes and the anti-Stokes side of Brillouin light scattering spectra in an asymmetric Fe(20A)/Cr(20A)/Fe(20A)/Cr(9A)/Fe(100A) ferromagnetic trilayer which takes place at a critical applied magnetic field H = 0.4 kOe. This sudden interchange is due to a first-order magnetic phase transition involving the outermost Fe layer static magnetization. It is shown that this effect is a consequence of a reversalof the sense of precession of dynamic magnetization in the outermost Fe layer.File in questo prodotto:
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