Kinetics of cation site exchange in mixed garnets

Röschmann, P.

doi:10.1016/0022-3697(81)90041-x

Cited by 18 publications

(4 citation statements)

References 54 publications

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“…see Table II and the discussion below). 4 Taking I-' as I-'FMR' we can calculate Hcb to be 0.64 Oe and 0.61 Oe for the AG and P05 samples respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Annealing such films, either in a furnace or with a laser, yielas changes in properties attributed to redistribution of the Ga 3 + and Fe 3 + cations among the tetra and octahedral lattice sites (3,4). Annealing such films, either in a furnace or with a laser, yielas changes in properties attributed to redistribution of the Ga 3 + and Fe 3 + cations among the tetra and octahedral lattice sites (3,4).…”

Section: Introductionmentioning

confidence: 99%

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Dynamic properties of laser-annealed, Ga-substituted EuYIG bubble films

Herman

DeLuca

1982

Journal of Applied Physics

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A new type of magnetic domain wall in nearly compensated Gasubstituted YIG Laser annealing induced changes in Ga-substituted EuYIG epitaxial bubble films were studied using FMR, bubble statics, SQUID magnetometry, and dynamic bubble translation experiments employing high speed photography. Comparing annealed to as-grown films, domain wall mobility and saturation velocity were observed to increase up to 50% while static coercivity He< was reduced by as much as one-third. Both an increase in exchange A and a decrease in damping a appear to contribute to enhanced mobility; we attribute the variations of both A and a to the interchange of Ga and Fe between crystal lattice sites brought about by laser annealing. The mechanism by which H" was reduced is less clear, but may follow from the reduction of stress during annealing.

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“…see Table II and the discussion below). 4 Taking I-' as I-'FMR' we can calculate Hcb to be 0.64 Oe and 0.61 Oe for the AG and P05 samples respectively.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic properties of laser-annealed, Ga-substituted EuYIG bubble films

Herman

DeLuca

1982

Journal of Applied Physics

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“…The redistribution of Ga/Al and Fe between octahedral and tetrahedral lattice sites is temperature dependent as discussed by Röschmann. 3 Thus, the temperature distribution obtained in the garnet film by the absorped laser beam is essential for the formation of CWs. The laser moves with the steady velocity v 0 ϭ15 mm/s along a straight line at the film surface.…”

Section: Appendixmentioning

confidence: 99%

“…At low temperatures the tetrahedral sites are higher populated by gallium/aluminum than the octahedral sites. [3][4][5] Therefore, the ion distribution between these lattice sites and thus the sublattice magnetizations can be controlled by annealing at different temperatures. If annealing is carried out at high temperatures, the state of equilibrium is reached rapidly.…”

Section: Introductionmentioning

confidence: 99%

Compensation walls in gallium and aluminum substituted gadolinium–bismuth–iron garnet films created by laser annealing: Measurements and simulations

Wilkens

Träger

Dötsch

et al. 2003

Journal of Applied Physics

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Magnetic garnet films of composition (Gd 2 Bi 1) (Fe 4.3 Ga 0.2 Al 0.5) O 12 are grown by liquid phase epitaxy on ͑111͒ oriented substrates of gadolininium-gallium-garnet close to magnetic compensation. Local compensation walls ͑CW͒ are fabricated by laser annealing. Images of parallel and antiparallel compensation walls and of Bloch walls in annealed regions are obtained by magnetic force microscopy ͑MFM͒. The MFM signals associated with the CWs turned out to be smaller in amplitude but broader in space than the signals created by Bloch walls. To simulate the experimental results a theoretical model is developed taking into account the broadening of the CW by the preparation technique. Very good agreement between measurements and numerical simulations is obtained.

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