Magnetic Shape Memory Material Datasheet
Goodfellow is delighted to announce the addition of an exciting new product to our range – Magnetic Shape Memory Material. This patented NiMnGa single crystal material has some extremely innovative properties:
Properties
|
Material |
NiMnGa single Crystal |
|
Elongation in Magnetic Field |
Up to 6%, typically 3 to 5% |
|
Response |
Up to 1 to 2 kHz |
|
Force Density |
About 2 MPa |
|
Work Output (force x stroke) |
Max 100 kJ/m3 |
|
Fatigue Life |
Several hundred million cycles |
|
Magnetic Field |
<0.8T |
|
Upper Temperature Limit |
Transformation martensite to austenite 70°C |
|
Curie Temperature |
95-105°C |
Fast Response to Control Signal
Magnetic field/strain
The strain developed depends on surface treatment. The following graph can be considered as an example.
Magnetization when pressed/elongated
Comparison with other materials
|
Material |
Strain |
Frequency |
Energy Density |
|
Magnetic Shape Memory Material |
<6% |
<2 kHz |
<100 kJm-3 |
|
(Thermal) Shape Memory Alloy |
<8% |
<3 Hz |
10,000 kJm-3 |
|
Magnetostrictive Materials |
0.14 – 0.2% |
100s kHz |
14 – 30 kJm-3 |
|
Piezo Materials |
0.04 – 0.07% |
100s kHz |
0.8 – 2.0 kJm-3 |
Please click here for an introduction and applications. Alternatively, if you would like to know more about this material, please send us an e-mail or telephone us using the numbers on our contact page.
Please click here for our standard catalogue dimensions and prices.