New bridge-circuit-type detector to measure precise resistance change of strain gauge at low temperature and magnetic field
| Autor: | Masashi Ohashi, Shota Tateno, Nobuya Kishii |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Condensed matter physics Detector General Engineering General Physics and Astronomy Magnetostriction 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Thermal expansion Magnetic field Condensed Matter::Materials Science Electrical resistivity and conductivity 0103 physical sciences Bridge circuit 010306 general physics 0210 nano-technology Strain gauge Voltage |
| Zdroj: | Japanese Journal of Applied Physics. 55:046601 |
| ISSN: | 1347-4065 0021-4922 |
| DOI: | 10.7567/jjap.55.046601 |
| Popis: | We report a new highly accurate and versatile bridge-circuit-type detector that has a simple structure and demonstrates a low degree of error for measurements of thermal expansion and magnetostriction by the strain gauge method. As an example, a commercial physical property measurement system (PPMS) is combined with a compact bridge-circuit box. Thermal expansion and magnetostriction are calculated from the resistance of the bridge and bridge voltage, measured by the operation of a standard PPMS resistivity option. The performance of the new detector is demonstrated by measuring the temperature and magnetic field dependences of the strain to obtain the thermal expansion coefficient and magnetostriction of the single crystals of rare-earth compounds RAl2 (R = Dy, Tb). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|