SEE e-Survey Database

Item 1

Total Number:

1

facilities, equipments/ instrumentation:

Jobin Yvon T64000 Raman Spectrometer

Year of acquisition:

2007

Average value at the time of acquisition :

17339949

Short Description:

The Jobin Yvon T64000 Raman system is equipped with a triple Jobin Yvon T64000 spectrometer, Coherent mixed Ar+/Kr+ ion gas laser and CCD detector system. The experimental set-up also includes a confocal microscope and a XYZ stage. The Cryovac Konti cooling cryostat for low temperature measurements makes it possible to obtain the micro-Raman spectra within the temperature range from 4 to 300 K. Through appropriate neutral filters of the T64000 system, the laser spot is driven by the mirror combination to the microscope system, which focuses a spot on the sample surface. The confocal microscope permits experiments on small size samples, with improved spatial, lateral and depth resolutions. The light scattered from the sample surface is redirected to the microscope and than orientated by mirrors to the triple monochromator. The spectral dispersed light from the monochromator enters the CCD (Charge Coupled Device) detector. The T64000 monochromator system consists of a double pre-monochromator and a spectrograph stages. The pre-monochromator is a twin monochromator working in a subtractive mode. It acts as a tunable filter in the spectral range defined by the scanning mechanism and the gratings. The spectrograph stage is used as disperser. The T64000 system can be utilized in a triple additive or in a triple subtractive modes. Its unique optical design allows for easy switching between additive and subtractive modes. An additive mode gives the highest spectral resolution and high linear dispersion, whereas a subtractive mode gives a high stray light rejection and allows for collecting low-frequency Raman spectra down to 5 cm-1.

Item 2

Total Number:

1

facilities, equipments/ instrumentation:

High magnetic Field measurement System

Year of acquisition:

2007.0000

Average value at the time of acquisition :

8967261

Short Description:

The High Magnetic Field Measurement System (HMFMS) made by Cryogenic is a very versatile system for various experiments and measurements in high magnetic fields up to 14 T, within the temperature range from 1.6 K to 325 K. The HMFMS is capable of measuring several physical quantities: • Magnetic moment and magnetization using a Vibrating Sample Magnetometer (VSM) • AC Susceptibility • Electrical resistivity • Hall Effect constant • Specific Heat The HMFMS is a “cryogen free system”, meaning it does not use liquid helium for cooling superconducting magnets. Instead, it uses a closed cycle system of helium gas cooling with a compresor. The main advantage of a cryogen free system is the low operating cost. No liquid helium or nitrogen is required for cooling down or operation; there are no costs associated with storage and transport of liquids. Safety issues and training for personnel are minimised. It is also simple to use: switch on the cooler and wait for it to reach the operating temperature; the system is then ready to use. In the core of the system is a superconducting magnet, based on a NbTi/Nb3Sn alloy. The magnet is able to achive magnetic fields of up to 14 T, with a magnet energation rate up to 0.7 T/min, and with a central field homogeneity of 0.001% over 25mm. The sample is mounted on a probe which is placed inside the Variable Temperature Insert (VTI) which allows for sample temperature variation in the 1.6-325K range. The temperature stability is ± 0.05 K, and a typical cooldown time for the entire system is about 28 hours. By changing a probe holder it can be easily changed the type of measurement performed on the system, i.e. the system can be used in different configurations for different experiments. The system is using a LabView based software for monitoring and data collection which enables automated multisequence measurements.

Item 3

Total Number:

1

facilities, equipments/ instrumentation:

Variable Angle Spectroscopic Ellipsometer

Year of acquisition:

2007

Average value at the time of acquisition :

23171186

Short Description:

The GES5E-IRSE Spectroscopic Ellipsometer is a combined system consisting of: DUV/Visible/NIR Spectroscopic ellipsometer (SE) and Fourier Transform Infra-Red Spectroscopic Ellipsometer (FTIR-SE). The polarizer and analyzer arms of both ellipsometers are mounted on a high resolution goniometric bench, made of double hollow ceown. Both these crowns are driven by computer controlled stepper motors. The incidence angle can vary from 7 to 90o in DUV-Visible-NIR range, and from 20 to 90o in MIR range, with a theoretical resolution of 0,0005o.

Item 4

Total Number:

1

facilities, equipments/ instrumentation:

Crystal growth using floating zone technique: Four Mirror Lamp Image Furnace

Year of acquisition:

2007

Average value at the time of acquisition :

N/A

Short Description:

Short Description: A four mirror optical floating zone furnace FZ-T-1000-H-HR-I-VPO-PC (Crystal System Co.) consists of four ellipsoidal mirrors made of Pyrex glass coated with highly reflective aluminum. The mirrors are air-cooled in order to prevent moisture condensation on the ellipsoidal surfaces. The principle of this technique is that radiation from the Halogen lamps is reflected and focused by the mirrors onto the bar sample to form a molten zone at the tip of the feed rod. Then the molten (floating) zone is translated along the sample length by moving the mirror stage with respect to the sample. The crystal is grown on the solidifying end of the floating zone. In addition, a rotation movement of the rod improves the microstructural homogeneity during directional solidification. In FZ-T-1000-H-HR-I-VPO-PC optical furnace the maximum operating temperature is 2200C in atmosphere (air, nitrogen, oxygen, argon, etc) within the pressure range from 5x10-5 up to 10 bars. Crystals can be obtained up to 150 mm in length and 10 mm in diameter, with a growing rate of 0.05-27 mm/h and a 5-60 rpm rotating rate.

Item 5

Total Number:

1

facilities, equipments/ instrumentation:

Omicron UHV VT AFM/STM, model B002645 SPM PROBE VT AFM 25

Year of acquisition:

2007

Average value at the time of acquisition :

N/A

Short Description:

Technical data • Matrix control system • Three modes of operation:  Contact mode AFM  Non-contact mode AFM  STM These modes provide force/distance and current/voltage spectroscopy measurements. The STM mode provides an atom manipulation facility. • Scan (and offset) range X/Y/Z: 10μm x 10μm x 1.2μm • Coarse movement X/Y/Z: 10mm x 10mm x 10mm; Step size: 40nm – 500nm • Z-resolution: 0.1Ǻ • Measurements with atomic resolution • Vibration isolation: Internal eddy current dumping • Tunneling current: < 1pA – 300nA • Gap voltage: ±5mV to ±10V; applied to tip/cantilever, sample grounded • Ultra High Vacuum (UHV) chamber: 10-9-10-11mbar • Working temperature range: 25K - 750K; with LHe or LN2 cryostat • Sample heating in preparation stage through direct or radiative methods up to 1000K

1. Subscription to peer-reviewed, international journals

Total Number:

24

Short description of the facility:

24 for Physics

2. Access to electronic databases

Total Number:

3

Short description of the facility:

N/A

3.ICT-based infrastructure for scientific information

Total Number:

3

Short description of the facility:

- 7 C-class networks with more than 300 computers - 1 cluster with 716 64-bit cores (1GB of memory per core) - 1 cluster with 128 32-bit cores (700MB of memory per core)

4.Other

Item description

N/A

Total number:

N/A

Short description of the facility:

N/A

IV. 3. Which is (are) your most needed resources and services not currently available at your centre?

N/A