Characterization Technniques Microstructure:
- X-ray Flourescence
(XRF)- EDX 700
- Scanning electron microscopy -
SEM (SEAS and MED)
Scanning transmission electron microscopy -TEM and STEM (MED) Scanning tunneling/atomic force microscopy - STM/AFM
(IMS-recently upgraded with CSAS and IMS funds)- Phase sensitive, electric and magnetic force extender - EFM and MFM (IMS)
- Scanning Microwave microscope (PHYS)
Scanning Ferromagnetic Resonance (PHYS) - Crystal structure
- X-ray diffraction-
XRD
- (E&ES- upgraded by IMS)
- X-ray absorption -
NEXAFS – theoretical capability (CHEM)
- Electronic structure and properties
X-ray photoelectron spect. - XPS (IMS)Scanning XPS (Access to instrument at NRL arranged by IMS)
Other properties:
- NMR (CHEM –instrument obtained with GWU funds)
UV-VIS and FT-IR spectroscopies (CHEM)
Flourescence Spectroscopy (CHEM)
- Thermal Analysis- DSC, DTA, and TGA (CHEM/PHYS– instruments obtained with NSF funds)
- AC Magnetic susceptibility
- Microwave microstrip spectrometer (based in ECE Microwave lab)
- High Pressure diamond anvil cell
- Cathodoluminescence imaging and spectroscopy (E&ES)
- Chemical composition and physical properties (E&ES)
- Electrochemical and battery cycling equipment
- DelTech high-T furnace (1800°C) and Lindburg high T furnace (1100°C)
Sample preparation and polishing facility
"Engineered" synthesis techniques
- Nanoparticle synthesis with requisite inert atmospheres and vacuum systems (Chem)
- Deposition of thin films via magnetron sputtering (MAE)
- Hydrothermal/solvothermal synthesis of kinetically stabilized materials (Chem)
Applications-Our current studies have applications in a large number of topical areas.
- Improving catalysts
- High temperature superconductors
Energy storage - fuel cells, batteries, etc. - Nanoparticles
Magnetic Refrigeration FED Display Technology Advanced Magnetic Materials and nanocomposites - Biosensors
- Integration of biomolecules with electronics
- Micro-wave devices and wireless communication
- Biocompatible ceramics and MEMS devices
- Mineral-water interfacial interactions
- Crystal growth/dissolution
- Disposal and containment of high-level radioactive waste
IMR Fascility GWU Virginia Campus
Vibrating Sample Magnetotometer (VSM) Cahn Model 4700 Automatic Electro balance Magnetic Solutions Model SMM-2000 LakeShore Model 460 3-Channel Gaussmeter Keithley Model 2700 Multimeter / Data Acquisition System Stanford Research Systems Model SR530 Lock-in Amplifier Vacuum Pump Circulation Pump KSE Drybox Chemical Aerotech Model LSR5P 5 mW He-Ne Laser (wavelength= 632 nm) Hinds Instruments Model II/CF57 Calcium Fluoride Photoelastic Modulator (PEM) Model 7280 Wide Bandwidth (2 MHz) DSP Lock-in Amplifier with Dual/Single Harmonic and Reference Modes Walker Scientific Model HV-5H Electromagnet with 5" poles and maximum magnetic field of 16,000 Gauss Applied Magnetics Model MC-50 Bipolar Electromagnet Power Supply LakeShore Model 450 Gaussmeter MMR micro miniature Joule-Thomson refrigerator with programmable temperature controller.
General MOKE (linear) MeasurementsTemperature-Dependent Measurements
- Optically transparent sample holder/refrigeration
Second-Order MOKE (non-linear) Measurements
- Coherent Model Mira 900 femtosecond modelocked Titanium: Sapphire Laser (wavelength= 700 nm to 1000 nm)
- Coherent Model Verdi solid-state diode pumped Nd: YVO4 Laser (wavelength=532 nm)
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