(EuTm)3(FeGa)5O12 garnet films with one-micron diameter magnetic bubbles

Giess, E. A.; Davies, Joseph E.; Guerci, C.F.; Hu, H. L.; Kuptsis, J. D.; Shaw, Jane M.

doi:10.1063/1.30180

Cited by 3 publications

(1 citation statement)

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“…Similarly, any garnet film composition that exhibits a large exchange stiffness (high Curie temperature), and does not contain ions which produce magnetic compensation near room temperature (e.g., Gd), leads to temperature-insensitive behavior. For example, Gd-Co-Mo films designed to have bubbles 0.9 #-tm in diameter have been found to show a 20 percent increase in stripe collapse field and a 20 percent decrease in stripe width over a range of 0°to 100°C [43], and (EuTm) 3(FeGa) 5012 garnet films with 1.0-#-tm diameter bubbles have shown decreases of 20 and 4 percent for stripe collapse field and stripe width, respectively, over a range of 20°to 130°C [44].…”

Section: Coercivity and Mobilitymentioning

confidence: 99%

Amorphous Materials for Micrometer and Submicrometer Bubble Domain Technology

Bajorek

Kobliska

1976

IBM J. Res. & Dev.

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A review and critique is made of those material and processing issues that pertain to the implementation of micrometer and subrnicrometer bubble devices on amorphous films. Adequate reproducibility and uniformity have been achieved in ternary amorphous films prepared by rf sputtering and their magnetic characteristics are very similar to those of analogous garnet films. Factors that may limit application to the amorphous films include defects and dielectric breakdown in insulating layers, sensitivity to annealing, and larger, but not prohibitive, coercivities. A salient problem common to both garnet and amorphous materials is attainment of sufficiently large values of Q to ensure stable device operation.

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Section: Coercivity and Mobilitymentioning

confidence: 99%

Amorphous Materials for Micrometer and Submicrometer Bubble Domain Technology

Bajorek

Kobliska

1976

IBM J. Res. & Dev.

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Flux growth of (Ca,Ge) -substituted rare−earth iron garnets in the regular solution approximation

Gualtieri

1979

Journal of Applied Physics

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The solubility parameters concept of regular solution theory has been extended to the growth from a PbO/B2O3 flux of (Ca,Ge) - substituted rare-earth iron garnets. Solubility parameters have been calculated for various oxides which are present in melts prepared for the LPE growth of these magnetic garnets. An excellent correlation is found between the logarithm of the distribution coefficient of a cation on the garnet dodecahedral sublattice ln Ki and the calculated partial molar heat of mixing of its oxide and the flux. The variation of the melt saturation temperature with type and quantity of solute oxide has also been calculated, as well as the variation of the saturation temperature with changes in flux composition. The small effect of La2O3 additions on the saturation temperature of PbO/B2O3 fluxed melts is easily understood in this thermochemical approach to LPE.

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Bubble domain memory materials

Nielsen¹

1976

IEEE Trans. Magn.

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(EuTm)3(FeGa)5O12 garnet films with one-micron diameter magnetic bubbles

Cited by 3 publications

References 0 publications

Amorphous Materials for Micrometer and Submicrometer Bubble Domain Technology

Amorphous Materials for Micrometer and Submicrometer Bubble Domain Technology

Flux growth of (Ca,Ge) -substituted rare−earth iron garnets in the regular solution approximation

Bubble domain memory materials

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