Design and construction of a desktop AC susceptometer using an Arduino and a Bluetooth for serial interface
We designed and developed a desktop AC susceptometer for the characterization of materials. The system consists of a lock-in amplifier, an AC function generator, a couple of coils, a sample holder, a computer system with a designed software in freeware C++ code, and an Arduino card coupled to a...
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| Other Authors: | , |
| Format: | Artículo |
| Language: | English |
| Published: |
2018
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| Subjects: | |
| Online Access: | https://doi.org/10.1088/1361-6404/aaa887 https://doi.org/10.1088/1361-6404/aaa887 |
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| Summary: | We designed and developed a desktop AC susceptometer for the characterization
of materials. The system consists of a lock-in amplifier, an AC function
generator, a couple of coils, a sample holder, a computer system with a
designed software in freeware C++ code, and an Arduino card coupled to a
Bluetooth module. The Arduino/Bluetooth serial interface allows the user to
have a connection to almost any computer and thus avoids the problem of
connectivity between the computer and the peripherals, such as the lock-in
amplifier and the function generator. The Bluetooth transmitter/receiver used
is a commercial device which is robust and fast. These new features reduce the
size and increase the versatility of the susceptometer, for it can be used with a
simple laptop. To test our instrument, we performed measurements on
magnetic materials and show that the system is reliable at both room temperature
and cryogenic temperatures (77 K). The instrument is suitable for any
physics or engineering laboratory either for research or academic purposes. |
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