Note: oscilloscope not included
Features
Simple structure
High quality microwave components
Stable performance
Introduction
Ferromagnetic resonance (FMR) is a key phenomenon in magnetism, particularly in the study of solid-state physics. It plays a foundational role in understanding microwave ferrite physics, which has significant applications in radar systems and microwave communications. FMR involves the interaction between microwave radiation and the magnetization of ferromagnetic materials, and it is used to study the magnetic properties of these materials.
The LEAI-16 Microwave Ferromagnetic Resonance Apparatus is designed to provide hands-on experience for students to explore FMR and its associated phenomena. This experimental system is capable of measuring the ferromagnetic resonance curve of a ferromagnetic specimen, which is essential for understanding the magnetic characteristics of materials under microwave irradiation.
The instruction manual offers a comprehensive guide, including experimental configurations, theoretical principles, and step-by-step instructions, making it a suitable tool for learning and mastering the principles of microwave ferromagnetic resonance. Please click Experiment Theory and Contents to find more information about this apparatus.
Using this apparatus, the following experiments can be conducted:
1. Understand and Master the Functions and Applications of Various Microwave Components:
The system includes a variety of microwave components that are integral to conducting FMR experiments. Students will learn the roles and applications of these components in creating and measuring microwave signals, which are essential for observing ferromagnetic resonance phenomena.
2. Understand the Measurement Principle and Experimental Conditions of Ferromagnetic Resonance:
This experiment provides students with an understanding of the principles behind FMR, focusing on the relationship between microwave radiation and ferromagnetic materials. Students will observe the FMR phenomena and learn the experimental conditions required for accurate measurements.
3. Determine Resonant Magnetic Field and Microwave Frequency, and Calculate Gyromagnetic Ratio (γ) and Lande's g-Factor (g):
In this experiment, students will determine the resonant magnetic field and microwave frequency for a given ferromagnetic specimen. By analyzing these parameters, they will calculate the gyromagnetic ratio (γ) and Lande's g-factor (g), which are important for understanding the material's magnetic properties.
4. Measure Ferromagnetic Resonance Line Width (ΔH) and Estimate Relaxation Time (τ) of Microwave Ferrite Material:
Students will measure the resonance line width (ΔH) of the FMR curve and estimate the relaxation time (τ) of the microwave ferrite material. These measurements are crucial for understanding the dynamic behavior of ferromagnetic materials and their response to microwave fields.
5. Learn How to Set Up and Adjust a Microwave Experimental System:
This experiment teaches students how to set up and adjust a microwave experimental system for FMR studies. This includes configuring the apparatus, adjusting the magnetic field, and optimizing the microwave signal to observe and measure FMR effects accurately.
Specifications
Microwave System | |
Specimen | 1 ( mono-crystal) |
Microwave frequency meter | range: 8.6 GHz ~ 9.6 GHz |
Waveguide dimensions | inner: 22.86 mm × 10.16 mm (EIA: WR90 or IEC: R100) |
Electromagnet | |
Input voltage and accuracy | Max: ≥ 20 V, 1% ± 1 digit |
Input current range and accuracy | 0 ~ 2.5 A, 1% ± 1 digit |
Stability | ≤ 1x10-3+5 mA |
Strength of magnetic field | 0 ~ 450 mT |
Dimensions | 140 mm (diameter) x 270 mm (height) |
Pole spacing | ~ 20 mm |
Sweep Field | |
Output voltage | ≥ 6 V |
Output current range | 0.2 A ~ 0.7 A |
Solid State Microwave Signal Source | |
Frequency | 8.6 ~ 9.6 GHz |
Frequency drift | ≤ ± 5×10-4/15 min |
Working voltage | ~ 12 VDC |
Output power | > 20 mW under equal amplitude mode |
Operation mode & parameters | Equal amplitude |
Internal square-wave modulation Repetition frequency: 1000 Hz Accuracy: ± 15% Skewness: < ± 20% | |
Voltage standing wave ratio | < 1.2 |
Waveguide dimensions | inner: 22.86 mm × 10.16 mm (EIA: WR90 or IEC: R100) |
Parts List
Description | Qty |
Controller Unit | 1 |
Electromagnet | 1 |
Support Base | 3 |
Microwave System | 1 set (including various microwave components, source, detector, etc) |
Sample | 1 ( mono-crystal) |
Cable | 1 set |
Instructional Manual | 1 |