My doubt is regarding M-H measurement in MgB2 bulk superconducting samples.
I send my samples for M-H measurement in squid.
I got M-H data (magnetic moment vs magnetic field at fixed temperature), the maximum magnetic moment i got is 4 on both sides on hystersis loop.
that magnetic moment ranges from 0 to 4. Next time i take measurement on same sample from same place. I got magnetic moment which is ranges from 0 to 0.4 only.
so what is the mistake on measurement.why magnetic moment came very less value (in between 0 and 1 only)
whether some multiple of 10 is missing or some mistake happen by technitian during measurement. I need to know the error