MgO Substrates

Twin-less crystal structure, low dielectric constant (9.65) and tiny loss at microwave band
Maximum Size: 50x50x30mm
Stocked and custom MgO substrates available
Orientations:＜100＞,＜110＞ and ＜111＞
Surface Roughness: Ra < 0.5nm
Applications: Thin films growth of Ferro-magnetic, Photo-electronic, semiconductor and high temperature superconductor (HTSC) applications

Code	Size	Thickness	Orientation	Surface Finish	Unit Price	Delivery
641-001	5x5mm	0.5mm	<100>	SSP	Inquire	2 weeks
641-002	5x5mm	0.5mm	<100>	DSP	Inquire	2 weeks
641-003	5x5mm	0.5mm	<110>	SSP	Inquire	2 weeks
641-004	5x5mm	0.5mm	<111>	SSP	Inquire	2 weeks
641-005	10x10mm	0.5mm	<100>	SSP	Inquire	2 weeks
641-006	10x10mm	0.5mm	<100>	DSP	Inquire	2 weeks
641-007	10x10mm	0.5mm	<110>	SSP	Inquire	2 weeks
641-008	10x10mm	0.5mm	<111>	SSP	Inquire	2 weeks
641-009	Φ12.7mm	0.5mm	<100>	SSP	Inquire	2 weeks
641-010	Φ12.7mm	0.5mm	<100>	DSP	Inquire	2 weeks
641-011	Φ25.4mm	0.5mm	<100>	SSP	Inquire	2 weeks
641-012	Φ25.4mm	0.5mm	<100>	DSP	Inquire	2 weeks
641-013	Φ50.8mm	0.5mm	<100>	SSP	Inquire	2 weeks
641-014	Φ50.8mm	0.5mm	<100>	DSP	Inquire	Inquire

For its low dielectric constant and tiny loss at microwave band, and availability of large sized MgO wafers (diameter of 2 inches and even larger) , MgO (Magnesium Oxide Crystals) has currently become an important industrial HTS (or High Temperature Superconductor) thin monocrystalline wafers. MgO is an excellent single crystal substrate for thin films of Ferro-magnetic, Photo-electronic, semiconductor and high temperature superconductor applications. There is also a growing amount of interest in using MgO substrates for the III to V elements, and in research studying the epitaxial effects of substrates on the crystallization of polymers. Another application is the deposition of ferro electric thin film coatings on magnesium oxide substrates. And there are also growing applications for MgO wafers in the field of plasma display panel (PDP) technology.

Hangzhou Shalom EO provides both stocked standard MgO wafers and customs wafers.

Common Specifications:

Material	MgO crystals	Orientation	＜100＞,＜110＞,＜111＞
Orientation Error	±0.5°	Maximum Size	50x50mm
Typical Thickness	0.5mm, 1.0mm	Thickness Tolerance	±0.05mm
Size Tolerance	±0.1mm	Surface Finish	SSP or DSP
Roughness	Ra<0.5nm	Cleaness and Package	1000 grade clean room, 100 grade bags

MgO Properties:

Growth Method	Special Arc Melting	Crystallographic Structure	Cubic a = 4.13 Å
Twinning Structure	Twin free	Orientation	<100>, <110>, <111>
Colour	Colourless	Transmission Range	0.2 to 8 µm
Density	3. 585 g/cm³	Melting Point	2780 +/- 20 °C
Thermal Expansion Coefficient	11.2 * 10^-6 K^-1	Dielectric Constant	9.65
Specific Resistivity	> 10¹⁷Ohm/cm

Curves:

1）Typical X-Ray Diffraction (XRD) Curve of MgO <100> Crystals Substrates

2) Typical Surface Roughness of MgO substrate <100> and <010> measured by Atomic Force Microscope (AFM) in 5μm x 5μm Scale

MgO Substrates

MgO Wafers Φ12.7mmx0.5mm <100> SSP

MgO Wafers Φ25.4mmx0.5mm <100> DSP

MgO Wafers 5x5x0.5mm <100> SSP