MFM01

High resolution long lifetime magnetic probes MFM01 series

The choice of the proper probe is very important during magnetic measurements. The magnetic probe should provide high resolution images with good magnetic signal. Besides it should “survive” under high-humidity conditions.

ScanSens offers new development - high resolution long lifetime magnetic probes MFM01 and MFM10. Special protective layers help to avoid oxidation and increase the cantilever lifetime substantially. Sharp silicon tip with coating less than 50 nm allows obtaining magnetic resolution till 20-30 nm!


SEM photo of the MFM01 probe tip. Curvature radius is about 35nm.	Magnetic structure of a hard disk drive (500 GByte) with bit size down to 20-30 nm, which was obtained by MFM01 probe in ambient conditions

Survival test – 30 days in high* humidity conditions!

*close to 100% without water condensation


Magnetic structure of a hard disk drive, which was obtained by MFM01 probe in ambient conditions	Magnetic structure of a hard disk drive obtained by MFM01 probe which was kept in the high humidity conditions within 30 days

Probe specification

Standard chip size: 1.6x3.4x0.3 mm compatible with the most of commercial AFM devices.

The base silicon is highly doped to avoid electrostatic charges.

High reflective Al back side coating.

Tip side is coated with CoCr magnetic coating with additional layers protecting from oxidation

Total coating thickness – 40-50 nm*.

Typical curvature radius of the tip is about 60 nm.

Guaranteed cantilever lifetime is 1 year if it’s storaged at the normal conditions (humidity 30-40%).

Cantilever series	Cantilever length, L±10 µm	Cantilever width, W±5 µm	Cantilever thickness, T±1 µm	Resonant frequency, kHz			Force constant, N/m
Cantilever series	Cantilever length, L±10 µm	Cantilever width, W±5 µm	Cantilever thickness, T±1 µm	min	typical	max	min	typical	max
MFM01	225	28	3	60	75	90	1	3	7

*At customer request we can make probes with different coating thickness to achieve different magnetic moments which will be the best for measuring of your samples.