Mixed crystals of doped rare earth gallium garnet

Details Mixed crystals of doped rare earth gallium garnet Mixed crystals of doped rare earth gallium garnet

1992-06-02

1994-04-12

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Synthetic precious stones

501152, 501126, 501123, 501102, 501108, 252 623GA, 156DIG63, 156DIG78, 156DIG95, 1566205, C04B 3560, C04B 3500

Patent

active

053025598

ABSTRACT:
A method of growing mixed crystals having at least two lattice sites each having a different number of adjacent oxygen ions from melts of oxidic multi-component systems, homogeneous mixed crystals being grown such that the cations intended to occupy the first lattice site having the highest number of adjacent oxygen ions and to occupy the second lattice site having the next lowest number of adjacent oxygen ions are chosen such that the ratio of the bond length of the cations in the first lattice site to the bond length of the cations in the second lattice site is in the range from 0.7 to 1.5.

REFERENCES:
patent: 3951729 (1976-04-01), Takagi et al.
patent: 3959006 (1976-05-01), Herrnring et al.
patent: 4199396 (1980-04-01), Brandle et al.
patent: 4233270 (1980-11-01), Schmidt
patent: 4302280 (1981-11-01), Bruni
patent: 4350559 (1982-09-01), Boudot et al.
patent: 4379853 (1983-04-01), Mateika et al.
patent: 4429052 (1984-01-01), Mateika et al.
patent: 4434212 (1984-02-01), Robertson et al.
patent: 4454206 (1984-06-01), Mateika et al.
Mateika et al., "Lattice Parameters and Distribution Coefficents as Function of Ca, Mg and Zr . . . Garnets", Jour. of Crystal Growth, vol. 56 (1982) pp. 677-689.
Mateika et al, "Growth and Investigation of {Gd.sub.3-x Ca.sub.x }[Ga.sub.2-y-z Zr.sub.y Gd.sub.z ](Ga.sub.3)O.sub.12 Garnets," Jour. of Crystal Growth vol. 30 (1975) pp. 311-316.

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