SGGG Substrate

SGGG (Ca Mg Zr doped gadolinium gallium garnet) crystal is an excellent substrate material for Bi Fe garnet epitaxial films. Gadolinium gallium garnet (GGG) substrate, one of the earlier developed garnet materials, can not be used as the substrate of high bismuth substituted iron garnet epitaxial layer because of its small lattice constant. Therefore, the SGGG crystals with Ca, Mg and Zr as substitution ions are more suitable for the epitaxial films.

OST Photonics offers high quality SGGG substrates for researchers and industries. Crystal size and thickness can be customized according to your requirements.

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Features

  • Substrate materials for YIG and BIG magneto-optical epitaxial membranes

  • Magnetic bubble memory storage

  • Magnetic refrigeration

Applications

  • Substrate materials for YIG and BIG magneto-optical epitaxial membranes

  • Magnetic bubble memory storage

  • Magnetic refrigeration

Processing Capability

  • Orientation: <111>, etc.

  • Dimension: 10x10mm, 10x5mm, 5x5mm, etc.

  • Thickness: 0.5mm, 1.0mm, etc.

  • Available items: substrate, blanks and customized optics

Specification and Properties of SGGG Substrates

Crystal Structure

Cubic

Growth Method

Czochralski

Lattice Constant

a=12.480 Å

Melt Point

1730 ℃

Density

7.09 g/cm3

Dielectric Constant

ε=30

Orientation

<111>, etc.

Orientation Tolerance

±0.5° or better

Dimension

10x10mm, 10x5mm, 5x5mm, etc.

Dimension Tolerance

±0.1 mm or better

Thickness

0.5mm, 1.0mm, etc.

Thickness Tolerance

±0.05 mm or better

Surface Finish

Single side polished (SSP)/Double sides polished (DSP)

Surface Roughness

Ra≤5Å (5×5µm)

Package

Class 100 clean bag, Class 1000 super clean room