Fe:SrTiO3 Crystals and Substrates

Kingwin Optics manufactures Iron Doped Strontium Titanate Crystal Substrate (Fe:SrTiO3) by introducing small amounts of iron into the SrTiO3 lattice. This doping process enhances the dielectric and magnetic properties of the substrate, making it suitable for a wide range of applications including field-effect transistors (FETs), high electron mobility transistors (HEMTs), magnetoresistive random-access memory (MRAM), and magnetic field sensors. Kingwin Optics offers Fe:SrTiO3 substrates with precise iron doping concentrations of 0.05% and 0.04%.

Specifications:

Main performance parameters
crystal system	Cubic crystal system
Growth method	Flame method
Lattice constant	a=3.905Å
Iron doping concentration (Fe%)	0.005%,0.04%
Melting point (°C)	2080
density	5.122（g/cm3）
hardness	6-6.5（mohs）
Coefficient of thermal expansion (/°C).	9.4×10-6
Dielectric constant	ε=5.20
Chemical stability	Does not dissolve 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, special orientation and size of substrates can be customized
thickness	0.5mm、1.0mm
Dimensional tolerances	<±0.1mm
Thickness tolerances	<±0.015mm, special requirements can reach <±0.005mm)
polished	Single-sided or double-sided
Plane orientation accuracy	±0.5°
Edge orientation accuracy	2° (within 1° for special requirements)
orientation	< 100 >, < 110 >, < 111 >, etc
wrap	Class 100 clean bag, Class 1000 clean room

 

Key Advantages:

• Enhanced Dielectric and Magnetic Properties: The iron dopants in the SrTiO3 lattice significantly enhance the dielectric and magnetic properties of the substrate, making it ideal for applications requiring strong magnetic and dielectric responses.
• Precise Doping Concentrations: Kingwin Optics provides Fe:SrTiO3 substrates with precise iron doping concentrations of 0.05% and 0.04%, allowing for tailored performance to meet specific application requirements.
• High-Quality Substrates: The Fe:SrTiO3 substrates are manufactured with high precision and quality control, ensuring consistent performance and reproducibility in research and industrial applications.
• Versatile Applications: The unique combination of enhanced dielectric and magnetic properties makes Fe:SrTiO3 substrates suitable for a wide range of applications, including FETs, HEMTs, MRAM, and magnetic field sensors.

Applications:

• Field-Effect Transistors (FETs): The enhanced dielectric properties of Fe:SrTiO3 make it an ideal substrate for FETs, improving device performance and efficiency.
• High Electron Mobility Transistors (HEMTs): The combination of dielectric and magnetic properties in Fe:SrTiO3 substrates can enhance the performance of HEMTs, particularly in high-frequency and high-power applications.
• Magnetoresistive Random-Access Memory (MRAM) The magnetic properties of Fe:SrTiO3 make it a promising substrate for MRAM, offering potential improvements in data storage density and read/write speeds.
• Magnetic Field Sensors: The enhanced magnetic properties of Fe:SrTiO3 substrates make them suitable for use in magnetic field sensors, providing increased sensitivity and accuracy.

Kingwin Optics’ Iron Doped Strontium Titanate Crystal Substrate (Fe:SrTiO3) offers enhanced dielectric and magnetic properties due to the precise doping of iron into the SrTiO3 lattice. With precise doping concentrations of 0.05% and 0.04%, these substrates are suitable for a wide range of applications, including FETs, HEMTs, MRAM, and magnetic field sensors. Kingwin Optics’ high-quality manufacturing process ensures consistent performance and reproducibility, making Fe:SrTiO3 substrates an attractive choice for research and industrial applications.