Entropy behavior of Er-doped YAG for application to ADRs

Details Entropy behavior of Er-doped YAG for application to ADRs Entropy behavior of Er-doped YAG for application to ADRs

Feb 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..605..383k&link_type=abstract

LOW TEMPERATURE DETECTORS: Ninth International Workshop on Low Temperature Detectors. AIP Conference Proceedings, Volume 605, p

Other

Magnetocaloric Effect, Magnetic Cooling, Cryogenics, Refrigerators, Low-Temperature Detectors, And Other Low-Temperature Equipment

Scientific paper

Garnets doped with rare-earth element are proposed for the coolant of adiabatic demagnetization refrigerators (ADR). We measured the specific heat and magnetization of a single crystal YAG (yttrium aluminum garnet) doped with 30% Er3+ ions for a temperature range between 93 mK and 8 K under a magnetic field up to 8.0 T applied along the <111> crystal axis. After correcting for the phonon and nuclear contributions, we derived the temperature and magnetic-field dependence of the magnetic entropy. Under a zero magnetic field, the entropy starts to decrease below 2 K and becomes half of the R ln 2 level at ~160 mK, which implies that the YAG refrigerator can be used for operating temperatures down to 100 mK. .

Affiliated with

Also associated with

No associations

Rating

Entropy behavior of Er-doped YAG for application to ADRs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Entropy behavior of Er-doped YAG for application to ADRs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Entropy behavior of Er-doped YAG for application to ADRs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1791382