MgO Substrates

Twinless crystal structure, low dielectric constant (9.65), and miniature 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 film 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

Due to its low dielectric constant and miniature loss at microwave band, and access to large-size MgO wafers, Single Crystal Magnesium Oxide (MgO) Wafers and Substrates have occupied substantial importance in the market of industrial HTS (High Temperature Superconductor) thin monocrystalline wafers for manufacturing high-temperature superconducting microwave filters and other devices required for mobile communication equipment. Other additional uses of MgO substrates include thin film growth of ferromagnetic, photoelectronic, and semiconductor. There is also an emerging interest in using MgO substrates for researching the epitaxial effects of substrates on the crystallization of polymers.

Hangzhou Shalom EO provides both stocked standard MgO wafers and custom MgO 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	Cleanness and Package	class 1000 clean room, class 100 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 Φ50.8mmx0.5mm <100> SSP

MgO Wafers 5x5x0.5mm <110> SSP

MgO Wafers 10x10x0.5mm <111> SSP