Mixed strontium and lanthanide oxides and a laser using monocrystals of these oxides
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United States of America Patent
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Aug 18, 1992
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N/A
app pub date -
Mar 13, 1991
filing date -
Mar 13, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Mixed strontium and lanthanide oxides and a laser using monocrystals of these oxides. These oxides with a magnetolead type crystalline structure have the following formula: Sr.sub.x Ln1.sub.y1 Ln2.sub.y2 Ln3.sub.y3 M.sub.z A.sub.a B.sub.b O.sub.19--k in which Ln1 represents at least one trivalent element selected from lanthane, gadolinium and yttrium; Ln2 represents at least one trivalent element selected from neodymium, praseodymium, erbium, holmium and thulium; Ln3 represents an element selected from bivalent europium or trivalent cerium with retention of electric neutrality by virtue of oxygen holes; M represents at least one bivalent metal selected from magnesium, manganese and zinc; A represents at least one trivalent metal selected from aluminum and gallium; B represents a trivalent transition metal selected from chromium and titanium; x, yl, y2, y3, z, a, b and k represent numbers so that 0
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