Abstract
Magnetic properties and FMR of pulsed laser deposited Y 3 Fe 5 O 12 (YIG) thin film on Gd 3 Ga 5 O 12 (1 1 1) substrate have been investigated in the temperature range 4.2 ≤ T ≤ 300 K. The effective saturation magnetization (4πM eff ), obtained from Ferromagnetic Resonance at room temperature, is found to be 2600 G, which is higher than SQUID measured 4πM S value of 1770 G. This implies that the value of 4πM eff can only be accounted by considering a negative anisotropy field (H U ) of around 830 Oe at room temperature. Such an anisotropy is attributed to a compressive stress (−1.70 × 10 10 dyne/cm 2 ) induced in the film closer to the film-air interface. The presence of this stress in YIG film was confirmed using multiple {hkl} stress measurements with grazing incidence X-ray diffraction performed at different depth of penetration on the YIG film.
Original language | English |
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Pages (from-to) | 191-195 |
Number of pages | 5 |
Journal | Journal of Magnetism and Magnetic Materials |
Volume | 483 |
DOIs | |
Publication status | Published - 1 Aug 2019 |