Remove Magnetization of Materials with Precision and Control
Alternating Field Demagnetizer (AFD) Features and Functionalities
Exploring the Capabilities of the Alternating Field Demagnetizer (AFD) for Magnetic Treatment
The Alternating Field Demagnetizer (AFD) offers a wide range of features and functionalities, making it a powerful tool for demagnetization applications. Designed as a self-contained tabletop unit, this demagnetizer is capable of a peak field of 150 mT (customizable) and a minimum settable field of 0.1 mT. Its intuitive LCD user interface embedded in the control unit allows for easy operation, providing precise control over the intensity and direction of the magnetic field to which the sample is subjected. The LCD continuously displays essential information such as the temperature of the coils and power stage, remaining operation time, and more, ensuring a comprehensive understanding of the system’s state. The demagnetizer can be operated through the control unit or remotely from a connected PC, offering flexibility and convenience. With its advanced functionalities and user-friendly interface, the AFD enables efficient demagnetization processes with optimal control and accuracy. Our comprehensive brochure, available for download, provides a detailed exploration of the AFD’s capabilities for magnetic treatment.
Main Purposes
- The Alternating Field Demagnetizer (AFD) is designed to effectively demagnetize a variety of samples, including rocks, sediments, soils, and archaeological artifacts.
- It provides a controlled method for the removal of unwanted magnetic remanence.
- The AFD is an essential tool in paleomagnetic and rock magnetic studies, aiding in the accurate analysis of magnetic properties.
Key Features
| Precise field control | The AFD offers precise control over the peak field strength and ramp steps of the field in microtesla (µT), allowing users to set the desired demagnetization intensity and time for their specific application |
| Self-contained tabletop design | Measuring just 55 cm x 40 cm x 48 cm and weighing ~50 kg (without a tumbler), the AFD fits in every laboratory |
| LCD User Interface | The demagnetizer is equipped with an intuitive LCD that provides real-time information about the temperature of the coils, power stage, remaining operation time, and other essential parameters. This ensures convenient monitoring and control of the demagnetization process |
| Operable with or without a PC | The AFD can be operated remotely from a connected PC, allowing seamless control and monitoring of the demagnetization process through the software interface. The field setting – peak field and ramp field – can also be adjusted with a knob next to the LCD user interface, providing flexibility and convenience for users |
| Shielded specimen cavity | Three shielding layers ensure the most minimal external interference during the experiments while also preventing outside radiation from the field |
Additional Functionalities
- Multiple Specimen Demagnetization or Tumbler: The AFD allows discrete, manual demagnetization of up to three one-inch cylindrical specimens or automated tumbling demagnetization of one specimen.
The AFD offers precise control, flexibility, and comprehensive functionalities to effectively demagnetize samples in various scientific applications. Its key features and additional functionalities ensure accurate and efficient demagnetization processes.
Specifications
| Property | Value |
|---|---|
| Demagnetization peak field | 0.1 – 150 mT (can be higher upon request) |
| Demagnetization time | 1 – 80 s |
| Sample handling | manual (up to 3 specimens) / tumbler (one specimen) |
| Sample size | 1’’ × 22 mm cylinder, 22 mm cube |
| Tumbling speed | 0 – 120 RPM |
| Operation frequency | 300 Hz |
| Shielding layers | 3 |
| Weight | ~50 kg (without tumbler) |
| Dimensions (W×D×H) | 155 cm × 40 cm × 48 cm (without tumbler) |
Essential Tool
Alternating Field Demagnetizer (AFD) Application Fields
The Alternating Field Demagnetizer’s versatility and precise control make it an essential tool in various scientific fields, enabling accurate demagnetization for a wide range of applications.
Paleomagnetism
Demagnetization of oriented rock samples or burned archaeological artifacts to derive their characteristic magnetic remanence direction and intensity.
Rock Magnetism
Demagnetization of rocks, sediments, or soils to understand their magnetic properties and acquisition processes.
Environmental Sciences
Demagnetization of soil and sediment samples to study environmental changes and their magnetic signatures.
Archaeology
Demagnetization of soil and archaeological materials to refine the interpretation of magnetic anomalies in magnetograms.
Material Sciences
Demagnetization of ferromagnetic materials to investigate their magnetic properties, such as coercivity, saturation magnetization, and grain interactions.