Search the Center's Web Site:

 

CNAMbar
LowTemp

Physical Properties Measurement System

PPMS

The PPMS(Physical Property Measurement System) is a low temperature probe station used to measure magnetic and electrical properties of various materials under a wide variety of pressure, magnetic field, and temperature conditions. It is currently used for both device testing and material characterization. The PPMS can perform resistivity,  Hall effect, Thermoelectric power, thermoconductivity, heat capacity, and AC susceptibility measurements. Measurements can be performed at temperatures between 350K and 300mK. The magnetic field can be set up to 14 Tesla and the sample can be pressurized to 3GPa inside a pressure cell. Contact Costel Rotundu at x57943 or rotundu@umd.edu for more information.

Superuser: Dr Costel Rotundu, rotundu@umd.edu, 56121
Supervisor: Prof Richard Greene, rgreene@squid.umd.edu, x56128

XL-7 Squid Magnetometer

XL-7 Squid

Two Quantum Design SQUID Magnetometers: Magnetic Property Measurement Systems MPMS XL-5 and XL-7 (5T and 7T), (room 1357, User Facility), Super-user: Rotundu / Dr. Greene

AC and DC susceptibility measurements:

- Maximum sample Size: 9 mm
- Field uniformity: 0.01% over 4 cm
- Temperature range: 1.8-400 K
- Maxim field ±5T or ±7T (z direction)
- Continuous low temperature control/temperature sweep mode-sweep rate: 0.001 - 10 K/min
- SQUID AC susceptibility measurement-0.1 Hz to 1 KHz, sensitivity: 2 x l0-8 emu at 0 T
- Ultra-low field capability/option ±0.05 G for the 5 T or 7T magnets
- Reciprocating sample option (RSO) - DC Magnetization absolute
sensitivity: 1 x 10-8 emu at 2,500 Oe
- He4 cooled, volume

Superuser: Dr Costel Rotundu, rotundu@umd.edu, 56121
Supervisor Prof Richard Greene, rgreene@squid.umd.edu, x56128

XL-5 Squid Magnetometer

SQuidMag

Mention: the 5T SQUID is fully operational, but because the 7T one covers all users’ needs, we keep it warm as a backup. It can be cooled down in 2 days and it takes about 100 liquid He.

Superuser: Dr Costel Rotundu, rotundu@umd.edu, 56121
Supervisor: Prof Richard Greene, rgreene@squid.umd.edu, x56128

Center for Nanophysics and Advanced Materials
University of Maryland
College Park, MD 20742-4111
Phone: 301.405.6129 Fax: 301.405.3779
Copyright © 2001 University of Maryland
Contact us with comments, questions and feedback