ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Static thermomagnetic recording on MnBiAl films at 633 nm is reported. The intrinsic Kerr rotation of the sample investigated is 1.8° at 633 nm. A 14 mW pulsed laser was used to write stable domains with diameter of 1.2 μm under zero external applied magnetic field, and a 12 mW pulsed laser was utilized to erase the recorded domains using an external field 600 Oe. The direct observation of the homogeneously recorded domain arrays of 16×22 points on an area of approximately 0.01 mm2 shows that they possess a very good circular configuration, distinct margin, and a very high contrast between "0'', "1'' states due to large Kerr rotation θk and coercivity Hc. The number of write/erase cycles on MnBiAl is over 106 times, which is a significant improvement over the 103 times possible with MnBi. Measurements demonstrate that MnBiAl film is a promising magneto-optical recording medium. © 1995 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.359241
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