ItemsLa2O3/REO%min
99.999
99.995
99.99
99.9
99.5
99.0
Rare earth impurities
REO
CeO2
0.0002
0.0005
0.0015
0.005
0.05
0.5
Pr6O11
0.0002
0.0005
0.0015
0.005
0.01
0.10
Nd2O3
0.0002
0.0005
0.0010
0.0010
0.01
0.1
Sm2O3
0.0002
0.0005
0.0010
0.001
0.01
0.01
Y2O3
0.0003
0.0010
0.0010
0.005
0.005
0.1
Non rare earth impurities
Fe2O3
0.0002
0.0003
0.0005
0.001
0.005
0.010
SiO2
0.0030
0.0050
0.0050
0.010
0.050
0.050
CaO
0.0010
0.0050
0.0050
0.010
0.050
0.10
CuO
0.0002
0.0002
0.0005
—
—
—
NiO
0.0002
0.0002
0.0005
—
—
—
PbO
0.0010
0.0020
0.0050
—
—
—
Cl—
0.02
0.03
0.03
0.03
0.05
0.05
Application:
Made of special alloys used in the manufacture of precision optical glass, high refractive optical fiber, suitable for cameras, camera, microscope lens and advanced optical instruments prism. Also used in the manufacture of ceramic capacitors, piezoelectric ceramics dopants and X-ray emitting material bromine lanthanum oxide powder. Used as a catalyst for many, for improving barium titanate (BaTiO3), strontium titanate temperature (SrTiO3) dependence of ferroelectric and dielectric properties, and the manufacture of fiber optics and optical glass
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