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MPMS SQUID Magnetometer

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This is a guide on how to center the sample in MPMS SQUID Magnetometer with RSO mode before your actual measurement.

Click is when you need to click the bottom on the Computer.

  1. Sample Removal:

    On computer: top bar Sample -> Remove

    On SQUID:

    1. Lower the black knob, twist, such that it connects to the black wire that is attached to the sample plate.
    2. Pull the knob + wire up.
    3. Close sample chamber (turn the black knob on the chamber to close)
    4. Pull sample tube out, and swap with the cap (make sure SQUID will not be contaminated).
    5. Swap samples on the sample plate.

    Optional on computer: Sample -> Remove vent

  2. Sample loading:

    On SQUID:

    1. Swap sample tube with the black cap.
    2. Purge 3 times.
    3. Open sample chamber, and purge again.
    4. Lower the sample, turn the black knob to release the sample.

    On computer: Sample -> Finished.

    Input sample descriptions.  

  3. Centering: (for small samples)

    Set field: set field to 10,000 -> no overshoot, HiRes

    RSO centering:

    1. Parameter -> 6cm
    2. Initialize transport
    3. Center
    4. Adjust position -> auto adjust (want center to be 3cm)
    5. Parameter -> 3cm
    6. Adjust position -> auto adjust (until the center is at 1.5cm, at least < 1.55cm)
    7. Close

    If not successful, lower temperature to base, and try again.

    Want to use 3cm for RSO scans, want to use 6cm for DC scans.

  4. Set Temperature

    1. Run sequence: any Degauss sequence.
    2. Set 100K with -5K/min.
    3. Lower to your target temperature, and start your actual scan.

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