کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1507656 | 993923 | 2012 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A compact capacitive dilatometer for thermal expansion and magnetostriction measurements at millikelvin temperatures A compact capacitive dilatometer for thermal expansion and magnetostriction measurements at millikelvin temperatures](/preview/png/1507656.png)
We describe a compact capacitive dilatometer for measuring thermal expansion and magnetostriction below 1 K using a home-made capacitance bridge with long-term stability of ΔC/C ∼ 1.6 × 10−7. We measured the thermal expansion and magnetostriction of a heavy-Fermion compound CeRu2Si2 and those of a standard copper sample to clarify the dilatometer cell effect. The temperature-dependent cell effect of our dilatometer, ΔL/L, was less than 10−8 below 0.2 K. The magnetic-field-dependent cell effect was not observed below 52.6 mT at 85 mK, and was less than −2 × 10−9 up to 10 T at 4.2 K. Our dilatometer provides precise thermal expansion and magnetostriction measurements at millikelvin temperatures.
► We reported the design and construction of a capacitive dilatometer.
► We improved the capacitance bridge for high stability measurements.
► Thermal expansion and magnetostriction were measured.
► Measurements were performed down to millikelvin temperatures.
► The temperature- and field-dependent cell effect of dilatometer was determined.
Journal: Cryogenics - Volume 52, Issue 10, October 2012, Pages 452–456