Lanthanum aluminate LaAlO3 crystal substrate | silicon Si crystal substrate | iron doped strontium titanate Fe: SrTiO3 crystal substrate | strontium niobate NB: SrTiO3 crystal substrate | Qiyue suppli

Lanthanum aluminate LaAlO3 Crystal substrate

 aAlO3 The crystal has good lattice matching for a variety of perovskite structure materials , It is an excellent substrate material for epitaxial growth of high temperature superconducting films and giant magnetoresistive films , Its dielectric properties are suitable for low loss microwave and dielectric resonance applications .

Technical parameters ：

Crystal orientation ：<100>、<110>、<111>、 Crystal structure ： Pseudocubic lattice constant ：a=3.792? Growth method ： Thirafa melting point ：2080℃ density ：6.52g/cm3 Mohs hardness ：6.5 Mohs Coefficient of thermal expansion ：10×10-6/℃ Dielectric constant ：25 Loss tangent （10GHz)：～3×10-4@300K,～0.6×10-4@77K Color and appearance ： Depending on the annealing condition , From brown yellow to brown , The polished substrate has natural twin domains . Chemical stability ： Insoluble in mineral acids at room temperature , The temperature is greater than 150℃ Soluble in H3PO4

silicon (Si) Substrate crystal substrate , silicon （Silicon）

silicon （Silicon）, It's a chemical element , The chemical symbol is Si, Formerly known as silicon . Atomic number 14, Relative atomic mass 28.0855, There are two allotropic forms of amorphous silicon and crystalline silicon , It belongs to the third period of the periodic table of elements ,IVA Metal like elements of group .

Silicon is also a very common element , However, it rarely appears in nature in the form of simple substance , But in the form of complex silicates or silica , Exists in rocks 、 Gravel 、 In the dust .

physical property ：

Yes Amorphous silicon And crystalline silicon Heteromorphs . Crystalline silicon is gray black , Amorphous silicon is black , density 2.32-2.34g/cm3, Melting point 1410℃, boiling point 2355℃, Crystalline silicon is an atomic crystal . Insoluble in water 、 Nitric acid and hydrochloric acid , Soluble in hydrofluoric acid and alkali solution . Hard and metallic .

Iron doped strontium titanate Fe:SrTiO3 Crystal substrate

 

Crystal system : Cubic system

Growth method : Flame method

Lattice constants :a=3.905?

Iron concentration (Fe%):0.005%,0.04%

Melting point (℃):2080

density :5.122(g/cm3)

hardness :6-6.5(mohs)

Coefficient of thermal expansion (/℃):9.4×10-6

Dielectric constant :ε=5.20

Chemical stability : Insoluble in water

Coefficient of thermal expansion :10.4×10-6/k

Tangent loss :~5×10-4(300k) ~3×10-4(77k)

Size :10×3m、10×5m、10×10mm、15×15mm、20×15mm

: According to customer needs , Customized substrates with special orientation and size

The thickness of the :0.5mm、1.0mm

Dimensional tolerances :<±0.1mm

Thickness tolerance :<±0.015mm Special requirements can meet <±0.005mm)

polishing : Single or double sided

Crystal plane orientation accuracy :±0.5°

Edge orientation accuracy :2°( Special requirements can meet 1° within )

Doped strontium niobate Nb:SrTiO3 Crystal substrate

The structure of Niobate Doped Strontium Titanate is similar to that of strontium titanate single crystal , But doped with strontium niobate Nb:SrTiO3 Conductive . The structure of Niobate Doped Strontium Titanate is similar to that of strontium titanate single crystal , but NSTO Conductive . At present, we can provide niobium doping concentration of ：0.05％,0.1％,0.5％ and 0.7％ Of Nb:SrTiO3

Size ：10x3,10x5,10x10,15x15,,20x15,20x20,

The thickness of the ：0.5mm,1.0mm

polishing ： Single or double sided

Crystal orientation ：＜100＞  ＜110＞  ＜111＞

Crystal plane orientation accuracy :±0.5°

 

characteristic

Nb:SrTiO3 And SrTiO3 Single crystals have similar structures , but NSTO Conductive . The resistivity range is 0.1~0.001wt% Between different . Conductive single crystal substrates provide electrodes for thin films and devices .

The main advantages of strontium titanate

Strontium titanate has superconductivity 、 Semiconductivity 、 Gas sensitivity 、 Thermal sensitivity and photosensitivity , Low dielectric loss 、 High dispersion frequency , In addition

High dielectric constant 、 Low power loss and other advantages .

Strontium titanate (SrTi03) It is one of the most widely used high temperature superconductors

One of the crystal substrates .SrTi03 Single crystal and various perovskite structural materials

The grid matches well , It is a high-temperature superconducting film and a variety of oxide films

Qualitative substrate material , At the same time, it is also applied to special optical windows and

High quality sputtering target .

​ The above information comes from Xiaobian axc,2022.04.21