Rare earth-iron garnet single crystal material and method for preparation thereof and device using rare earth-iron garnet single crystal material
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United States of America Patent
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Issued Date -
Sep 25, 2003
app pub date -
Mar 17, 2003
filing date -
Sep 18, 2000
priority date (Note) -
Abandoned
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Abstract
An object of the present invention is to efficiently provide a high-quality rare-earth iron garnet single crystal. The invention relates to a rare-earth iron garnet single crystal substantially composed of an Re.sub.3Fe.sub.5-xM.sub.xO.sub.12 single crystal (where Re is at least one element selected from Y, Bi, Ca, and lanthanide rare-earth elements with atomic numbers of 62 to 71; M is at least one element selected from Al, Ga, Sc, In, Sn and transition metal elements with atomic numbers of 22 to 30; and 0.ltoreq.x<5), with the number per unit surface area (grains/cm.sup.2) of crystal grains that form low-angle tilt boundaries equal to 0.ltoreq.n.ltoreq.10.sup.2; and also relates to a device in which this rare-earth iron garnet single crystal is used.
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