Facilities - Physical Properties

DynaCool PPMS, a next generation physical property management system from Quantum Design.
Physical Properties

About the Facility

The Physical Properties Facility focuses on equipment to measure and manipulate the magnetic moment. The facility boasts a DynaCool PPMS, the latest generation Physical Property Measurement System from Quantum Design. Other equipment includes a MPMS squid magnetometer, which offers advanced performance in all areas of magnetometry, and a 4.5 T magnetic annealing system for sample modification. The system combines high temperature annealing with a high magnetic field to potentially modify the magnetic properties of thin film and alloys. It makes use of exchange interactions at high temperature to form new magnetic properties and/or control the crystal growth. Also, the facility provides easy access to liquid nitrogen to various research groups in NCMN, MRSEC, and other groups at UNL such as the athletic department.
In general cryogenics are vital and used by research groups for many purposes. There are several superconducting magnets that require a significant amount of liquid helium and liquid nitrogen to operate and many of the high vacuum systems and detectors use liquid nitrogen. Also cryogenics are used in various experiments to measure materials properties at low temperatures. All undergraduates and graduate students involved in low temperature measurement and vacuum systems use the facility. This facility enables all of our research on magnetism and magnetic materials, as well as nanoelectronics, solid-state chemistry, etc. It is thus an integral part of NCMN’s research portfolio.

Acknowledgement Text

Agencies including NSF and the University providing partial support of our Nebraska Nanoscale Facilities and NCMN Facilities require that the following words be included at the end of any Acknowledgement section of a paper in which experimental work was done in NNF-NCMN facilities:

The research was performed in part in the Nebraska Nanoscale Facility: National Nanotechnology Coordinated Infrastructure and the Nebraska Center for Materials and Nanoscience (and/or NERCF), which are supported by the National Science Foundation under Award ECCS: 2025298, and the Nebraska Research Initiative.

Equipment

PPMS DynaCool.

PPMS DynaCool

The DynaCool PPMS is the next generation Physical Property Measurement System from Quantum Design. The DynaCool comes equipped with a 9 T conduction-cooled superconducting magnet system. This system allows for fast and precise control of the ± 9T magnetic field. The DynaCool offers an array of measurement options: A VSM for magnetometry measurements such as hysteresis loops, Magnetization Vs temperature curves. An electrical transport option (ETO) to measure Resistance, IV Curves, and Differential Resistance. A Horizontal Rotator Option which allows for the ETO measurements on samples rotating a full 360° in the presence of a 9 T applied magnetic field. The temperature range of the DynaCool is 1.8 K to 400 K for most measurements such as the VSM option. The DynaCool also comes with a Helium 3 option that allow for sub-Kelvin measurements for the ETO option to down 0.4 K but with a maximum temperature of 350 K.



Liquid Nitrogen

A 230-liter supply of liquid nitrogen is maintained at this facility. Researchers can transfer LN2 to their own dewars (typically 1-30 L) as needed and are billed on a per-liter basis.



MPMS Squid

The MPMS XL SQUID magnetometer from Quantum Design offers advanced performance in all areas of magnetometry. The Quantum Design MPMS Xl uses a Superconducting Quantum Interference Device (SQUID) magnetometer to monitor very small changes in magnetic flux and to measure the magnetic properties of samples. The system offers a user friendly automated software, a dynamic range in temperature and a sensitivity of 1x10-8 emu. Data can be collected as magnetic moment vs temperature measurement (ZFC-FC, susceptibility) or moment vs magnetic field (hysteresis loops).



4.5 T magnetic annealing system

This annealing system combines high temperature annealing with a high magnetic field to potentially modify the magnetic properties of thin film and alloys. The system makes use of exchange interactions at high temperature to form new magnetic phases and/or control the crystal growth.


Charge Rates for NCMN Physical Properties Facility (PP) ($/hour) - 2023/2024
Instrument Equipment NCMN Faculty Specialist NCMN Faculty Equipment University Faculty Specialist University Faculty Equipment Industry Specialist Industry
Dynacool PPMS 14 62 16 70 25 109
PPMS 12 62 14 70 21 109
MPMS Squid 7.50 62 9.00 70 16.00 109
4.5 T Annealing / Magnetizer 6.50 62 7.50 70 11.51 109

PP Facility Liquid Nitrogen and Liquid Helium Rates
Instrument Equipment NCMN Faculty Specialist NCMN Faculty Equipment University Faculty Specialist University Faculty Equipment Industry Specialist Industry
Helium Liquified 5.00 6.00 9.00
Nitrogen 1.10 1.25 2.00

**$1.00 will be charged for each Nitrogen startup

Facility Contacts

Steve Michalski

Steve Michalski

Facility Specialist - Primary

N102A NANO
(402) 472-7096
smichalski2@unl.edu