An 8 µm period bubble memory device with relaxed function designs

Orihara, S.; Yanase, Toshihiko; Majima, T.

doi:10.1109/tmag.1979.1060402

Cited by 12 publications

(2 citation statements)

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“…From results obtained in our experiments, we found that the required drive fields for function operations could be remarkably improved by employing relaxed function designs [1] where pattern periods and sizes in function designs are increased up to twice those of the conventional designs. In conventional designs, the required drive fields are determined by those of the function operations, such as replicate gates, swap gates and stretcher-detector whose designs are based on half scaling from 16 ~m period 3 ~m bubble devices.…”

Section: Introductionmentioning

confidence: 86%

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Design and characterization of a 1 megabit bubble memory device with relaxed function designs

Yanase

Inoue

Iwasa

et al. 1981

Journal of Applied Physics

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Articles you may be interested inAnalysis and design of ionimplanted bubble memory devices J. Appl. Phys. 61, 3491 (1987); 10.1063/1.338735Thinfilm detector performance on a one megabit magnetic bubble memory One megabit bubble memory operation over extended temperatures A novel probe tester for the characterization of 1 Mbit/cm2 bubble memory devices Design and functional characteristics of a 3μm, 254 K bit block replicate bubble memory device A low drive field I megabit bubble memory device has been developed with relaxed function designs and a planar process using a new type of Siloxane resin. The I megabit device uses a block replicate/swap organization based upon 1.9 p,m diameter bubbles. The basic cell size is 7 p,mX8 p,m while the minimum feature size has a value of 1 p,m. The chip size is 9.1 mm X 9.9 mm. Fabricated 1 megabit chips have been characterized over a drive field range of 4S to 6S Oe (peak field of 100 kHz triangular wave drive). and over a temperature range of 0 to 90"C. The results obtained in the characterization for the 1 megabit chips are good enough to guarantee the same drive field and sense requirements for packaged 1 megabit devices as those for 3 p, m bubble 2S6 kbit devices.

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Section: Introductionmentioning

confidence: 86%

“…1 shows the 1 megabit chip architecture with the relaxed function designs and folded minor loops [7]. There are slight modification of previously reported designs [1]. Each block has 2 generators and 2 detectors which are respectively shifted one bit position from each other.…”

Section: Design and Fabricationmentioning

confidence: 99%