6 Inch LiTaO3 LiNbO3 Wafer Black Polarized For SAW / BAW 128 Degrees Y Z-Cut
6 Inch LiTaO3 LiNbO3 Wafer Black Polarized For SAW / BAW Applications 128 Degrees Y Z-Cut
Lithium niobate (LiNbO3) single crystal is a ferroelectric crystal with high electromechanical coupling coefficient and low propagation loss, which can be used to fabricate SAW devices with up to 50% bandwidth. The acoustic surface wave properties of lithium niobate single crystal materials are closely related to their orientation and propagation direction. According to different cutting angles and propagation directions, the saw propagation velocity is 3400~4000m/s, the electromechanical coupling coefficient is 0%~5.6%, and the temperature coefficient is -1.1~-95.6(10^-6/℃).
Lithium tantalate (LiTaO3) has piezoelectric, electro-optical and nonlinear optical characteristics, and a wide transparency range going from ultraviolet to infrared. It is desirable that LiTaO3 wafer was a smooth surface in order to function with good quality. Chemical mechanical polishing (CMP) has been used to planarize integrated circuits (ICs) or obtain a high surface quality of the substrates. This paper investigates the effect of citric acid as an additive in the slurry for LiTaO3 CMP. The roughness of the wafers was measured by an atomic force microscopy (AFM, XE-100) after polishing. The slurry, which contains citric acid as an additive, has a higher material removal rate and friction force than a slurry without an additive. After polishing, the surface roughness of the LiTaO3 wafer can be reduced down to 1.7A of Ra.
Characteristic Specification
| Crystal Sturucture | Trigonal, Space group R3c, Point group 3m |
| Melting Point | 1253℃ |
| Mohs Hardness | 5 |
| Density (g/cm3) | 4.64 |
| Deliquescence | None |
| Optical Homogeneity | ~5x10-5/cm |
| Transparency Range | 420-5200nm |
| Absorption Coefficient | ~0.1%/cm @1064nm |
Refractive Indices | ne=2.146, no=2.220@1300nm |
| Thermal Expansion Coefficients (at 25℃ ) | //a,2.0x10-6/K |
| Thermal Conductivity Coefficients | 38 W/m/K at 25℃ |
| Thermal Optical Coefficients | dno/dT=-0.874 x 10-6/K at 1.4μm |
The Sellmeier Equations | no2=4.9048+0.11768/(λ2-0.04750)-0.027169λ2 |
| Material | 3" 4" 6" LT wafer Saw/Optical grade | ||
| Orientation | X112°/Y28°/Y36°/Y42°/YZ or Customized | ||
| Curie Temp | 605°C±3°C | ||
| Doped with | Fe | ||
| Single Domain | Completed Polarization / Reduced | ||
| Orientation | 36°Y, 42°Y, X-112°Y, Y, Z | ||
| Diameter | 76.2±0.2mm | 100±0.2mm | 150±0.2mm |
| Primary Flat | 22±1mm | 32±1mm | 47.5mm, 57.5mm, Notch |
| Thickness | 0.07mm~1.0mm | 0.1mm~1.0mm | 0.35mm~1.0mm |
| Surface finish | Single / Double side polish / Double side lapped | ||
| TTV | < 1~5µm | ||
| BOW | ± (20µm ~40um ) | ||
| Warp | <= 20µm ~ 50µm | ||
| LTV (5mmx5mm) | <1.5 um | ||
| PLTV(<0.5um) | ≥98% (5mm*5mm) with 2mm edge excluded | ||
| Polished side Ra | Roughness Ra<=5A | ||
| Back Side Criteria | Roughness Ra:0.5-1.0µm, GC#1000 | ||
| Scratch & Dig (S/D) | 20/10, 40/20, 60/40 | ||
| Edge Profile | Compl't with SEMI M1.2@with GC800# .regular at C typed | ||
| Cracks, saw marks, stains | None | ||
Display of LiTaO3 Wafer and LiNbO3
FAQ –
Q: What you can supply logistics and cost?
(1) We accept DHL, Fedex, TNT, UPS, EMS, SF and etc.
(2) If you have your own express number, it's great.
If not, we could assist you to deliver. Freight=USD25.0(the first weight) + USD12.0/kg
Q: How to pay?
T/T, Paypal, West Union, MoneyGram, Secure payment and Trade Assurance on Alibaba and etc..
Q: What's the MOQ?
(1) For inventory, the MOQ is 5pcs.
(2) For customized products, the MOQ is 5pcs-20pcs.
It depends on quantity and technics
Q: Do you have inspection report for material?
We can supply detail report for our products.
Packaging – Logistics
we are concerned with each detail of the package, cleaning, anti-static, and shock treatment. According to the quantity and shape of the product,
we will take a different packaging process!
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.