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Advanced materials characterization with functional gradient – Laboratory prezentation
Contract 217/2006 CEEX Modul III - Promovarea competentelor romanesti in domeniul materialelor avansate cu gradient functional „VIZ-GRAF
Dr. Ing Jana PINTEA
We have research activities in the fields of:Alnico Permanent Magnets and applications;
Sintered NdFeB Permanent Magnets and applications;
Nanocompozite Materials;
Magnetic Measuring for magnetic materials and magnetic circuits;
New composite magnetic materials for unionizing electromagnetic wave
absorbers and shields (from 50 Hz frequency to microwaves: 0,8-10 GHz).
Nano-structured magnetic materials and multilayers with anisotropic
magnetoresistance and giant magnetoresistance.
Microgranular fluorescent magnetic materials for undistructive
defectoscopy.
Oxides with perovskite structure for application as sensors.
Metallo-polymer films with micron thickness for corrosion protection.
Bio-electro-magnetic compatibility
The main national projects we are involved:
CEEX M 1 69/2005 “Microsisteme de multistraturi nanometrice magnetice cu efect de magnetorezistenta gigantica (GMR) si tunelare dependenta de spin (TMR) pentru spintronicã
CEEX- Modul 1- 2005 Retea interdisciplinara destinata sintezei si studieriinanostructurilor semiconductoare şi conductoare in scopul obţinerii dedispozitive fotonice si optoelectronice şi pentru utilizarea in biologie şimedicina – nanocrystalnet;
CERES PROJECT -Metallic magnetic multilayer structures with giantmagnetoresistance for magnetic sensor applications;
New magnetic materials and electromagnetic shilds for unionizing radiationprotection (from 50 Hz-to 10 GHz);
PN II -2007 – Intelligent processing of the nano divice type spin valve withgiant magnetoresistence for spintronic aplications
CEEX M 4 19/2005 “Bio-electro,agnetic compatibility laboratory.
We cooperate with important institutions from ROMANIA:
The Faculty of Physics, University Bucharest
The Faculty of Physics, University Transilvania Brasov
University Politehnica Bucharest
The National Institute for Research and Development in Microtechnologies Bucharest
The National Institute for Research and Development in non ferrous materials;
The Faculty of Physics, University Iasi
The Faculty “Stefan cel Mare” Suceava
Another activity of our research Department:
Measurements and characterizations of magnetic materials and magnetic circuits:
• measurements and thermomagnetic analyses perfomed with the VSM Lake Shore for dia-, para-, ferromagnetic materials, on compacted solid samples, powders, thin layers, liquids in the temperature range of 8 - 1300K, in the magnetic field of Hmax ≅ 14 kOe;
• magnetic measurements in closed circuit performed with the Histerezisgraph Brockhouse measuring equipment
• the characterization of soft magnetic materials in d.c. and a.c. on torus samples in a magnetic field of 0 - 300 Oe and frequencies of 0 - 10 kHz;
• the characterization of FeSi sheets (measurement equipment on a single sheet with sizes of 85 x 500 mm2). The total power losses in a.c. can be measured at 50 Hz and 1.5 T;
• Hall efect measurement from thin film
FT-IR spectroscope
Frequency range 7,800-350 cm-1
Simultaneous TG-DTA/DSC Apparatus+ FTIR- STA 409PC +FTIRTemperature range : 25 …1500grd C
Dilatometer DIL 402 PC
Temperature range: 25 … 1600 grd C
Atomic Force Microscope Atomic Absorption Spectrometer Model SOLAAR S4
Universal equipment for thin layer deposition
Spectrophotometer UV-VIS
Analytical X ray Difractometertype D8 Advance
Material Testing Machine
Zwick T1 – FR005TN
Optical MicroscopeCarl Zeiss NU 2
AC/DC Hystograph
VSM 7300 Lake Shore
Spectrum analyzer 84115EM-E7405A9 kHz – 26.5 GHz
Shield attenuation measurement
Signal generator E8257D-540Frequence range - 250 kHz la 40GHzAmplitude: 0 la 65 dB
Horn antennas 84115EM-11966E(2Pcs) – 18 GHzFrequence range1 GHz to 18GHzPower max 300 WImpedance 50 ΩConector type N ETS Lindgreen
Power-meter 57949kHz- 110 GHzPower range: -50 - +44dBm2 sensors+2directional couplers(0,1 MHz to 4 GHz)2 sensors - 1,5MHz- 6GHz and10MHz-18GHz
Power amplifier9 KHz – 4 GHz -10W
Power amplifier 20T4G18A 4 – 18 GHz; 20W
G-TEM cell 5405 ETS Lindgreen 1 – 18 GHz
Measurement of electromagnetic field strengh
• Electronics equipments;
• Biomaterials.
structural analyses: X-ray difractometry, optical microscopy,scanning electron microscopy;
determining of physical and mechanical characteristics:hardness, microhardness tests, density, Fisher grain meansize, tensile, compression and 4-point bending strength ofplastics, ceramics, metals, and textiles;
determining of electrical characteristics
determining of magnetic characteristics: remanence coerciveforce of induction, coercive force of polarization, maximumspecific magnetic energy, permeability, power losses;
microbiological analysis