SQUID - ambient measurement.

Here is the traditional Quantum Design MPMS XL in our lab at the Glenn T. Seaborg Center at Lawrence Berkeley National Laboratory.

I have some experience on measuring small crystals loaded in a straw with two blocks of "quartz wall" (ambient pressure).

Since the magnetic correction is small for the "quartz wall", for most "magnetic" samples, the voltage vs. longitudinal length scan looks just like the diagrams shown in the users' manual.


However, to play the same measurement under high-pressure is not so easy, since we are going to use a "giant" pressure cell, which is composed of a few parts, and contributes a significant magnetic background to the data (1st order), the slow thermal reaction of the pressure cell maybe another problem that affects precision (2nd order).