
Variable Magnetic Field Module (VMFM)
The Variable Magnetic Field Module (VMFM) represents the pinnacle of magnetic characterisation in Atomic Force Microscopy (AFM). By combining high-resolution Magnetic Force Microscopy (MFM) with an innovative in-plane magnetic field generator, VMFM enables dynamic studies of magnetic phenomena at the nanoscale, opening new frontiers in materials science and data storage research.
Manufacturer
CSI
CSInstruments is a French scientific equipment manufacturer specialised in the conception of Atomic Force Microscope and options designed for existing AFM (Nano-Observer AFM, Resiscope™, High Voltage Amplifier, Magnetic modules). The product range proposed by CSInstruments is designed and manufactured to help the scientific community to achieve nanometre performances that meet the research needs and requirements for actual and future nanoscience applications.
CSInstruments was founded by a team of experts working in AFM field for more than 20 years, starting as pioneer with some historical manufacturers. CSInstruments activity is also based on a qualified and dynamic team, experienced in the fields of mechanics, electronics and data processing. This expertise ensures innovation and performance in the production of AFM and achieves an excellent price/performance ratio!

VMFM - Variable Magnetic Field Module
Key Features
- Dynamic Magnetic Imaging: Observe real-time changes in magnetic domains
- In-Plane Magnetic Field: Generate controlled magnetic fields up to 3000 Gauss
- No Sample Heating: Unique design eliminates current-induced heating
- High Resolution: Maintain nanoscale imaging capabilities during field application
- In-Situ Control: Adjust magnetic field strength and direction during experiments
- Seamless Integration: Designed for compatibility with Nano-Observer AFM systems
Applications
Data Storage Technology
- Study magnetic recording media under varying field conditions
- Investigate domain wall motion in next-generation storage devices
- Optimise magnetic bit patterns for increased data density
Materials Science
- Characterise novel magnetic materials and nanostructures
- Analyse magnetisation reversal processes in thin films
- Study magnetic phase transitions and domain dynamics
Semiconductor Industry
- Evaluate magnetic properties of spintronic devices
- Investigate magnetic sensors and MEMS devices
- Perform failure analysis on magnetic components
Fundamental Physics
- Explore magnetisation dynamics at the nanoscale
- Study topological magnetic structures like skyrmions
- Investigate magnetoelectric coupling in multiferroic materials
Service Support
Comprehensive repairs and servicing
Annual Support Programs
Your metrology instrumentation is a major investment that is critical to your business operation and success. In today’s competitive climate, it is more important than ever to extend the functionality and peak performance of your metrology equipment years beyond the expiration of your factory warranty. CN Tech’s Support Programs will help ensure that your investment is protected, and that you and your instrument’s are always operating at peak performance.
With over 20 years’ experience servicing and repairing you can be assured that your system is in safe hands. The independent services we offer include system relocation, maintenance visits, parts and consumables, and break down interventions.
CN Tech’s Support Programs are an economical way to guarantee optimal working condition:
- Annual Preventive Maintenance
- Priority Technical Assistance
- Preferred Parts Availability
- On-Site User Training
- Remote Diagnostics
- No surprise repair expense and much more!
Support Contact Example
An example of our service and support contracts are shown below:

Metrology & Instrumentation Annual Support Programs 2024/25
CN Tech's Support Programs will help ensure that your investment is protected, and that you and your instrument’s are always operating at peak performance.