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Lanthanum Titanate Coating Materisls (LaTiO3)

Crystal Evaporation Material is the high refractive index Mixture researched and developed by our company independently with patent protection. It is applied for the coating of antireflection films and multilayer. The product has the following characteristics:

Uniform components, large density and high purity;

*Visible to near-infrared waveband without absorption, 360nm - 7000nm high transmittance;

Melt completely before deposition;

No deflation and splash in the melting process;

Uniform film with consistent thickness.

Basic Properties:

Refractive Index (550nm)	Color	Purity	Melting Point	Density	Evaporation Temperature	Product Form
2.10	Black	99.95%	1800ºC	5.90g/cm3	2200-2300°C	0.4-4.0mm

The test report of KT01 Crystal Evaporation Material

1. The optical properties of single film:

Evaporation conditions:

Starting vacuum degree	Oxygen partial pressure	Deposition rate	Substrate temperature	Film thickness	Substrate	Vacuum coating machine
3×10-3Pa	8×10-3Pa	4A/S	350℃	4.5KA	Bk7	OPTORUN Super AR-1300

Fig.1 The transmittance spectra typical for films of KT01 Crystal Evaporation Material

Tab.1 Data on refractive index and absorption index calculated from transmission and reflection data:

Wavelength(nm)	n	k
364.85	2.16622	0.00033
398.32	2.11311	0.00058
441.85	2.07821	0.00046
498.09	2.05059	0.0003
575.26	2.03796	0.00013
682.99	2.02716	0.00035
853	2.00849	0.00114

2. Evaporation film spectral curve of AR Mutilayers (seven) comparison chart between KT01 Crystal Evaporation Material and H4 evaporation Material

3. AR film reliability test

Project	Conditions	Results
Environmental test	Lasting: 48H	Through test, there is no mist and devitrification. The spectral curve has no apparently change. Both appearance and function are ok.
	Temperature: 80℃∽-20℃
	Humidity: 75%
	Circle index: 4
Film toughness test (after the environmental test)	Moisten stencil paper with acetone. Wipe back and forth at the same place for 25 times with 1-2kg strength	The film doses not peel off. Regard as ok.
	Make the high-strength rubber belt closely cling to the lens surface. Quickly tear out the belt in 90 degree. Repeat it at the same place for 3 times.

4. Conclusion:

In the vapor deposition of KT01 Crystal Evaporation Material, there is no spattering. And Material outgassing is minimal. The refractive index is stable. It has good repetitiveness. This material is suitable for stable batch

production of the AR film.

Lanthanum Titanate (LaTiO3) Sputtering Target

Purity---99.9%

Melting point---2200-2300 ℃

Shape--- Discs, Rectangle, Step, Circle, Tube, Custom-Made

Diameter--- Dia (≤250mm),

Length---(≤600mm), Width---(≤250mm) Thickness---(≥1mm)

Lanthanum Titanate (LaTiO3) Powder

Purity---99.9%

Size --- 325mesh, 150mesh, 100mesh