Infrastructure

Magnetism Laboratory

Physical space equipped with a Vibrating Sample Magnetometer - VSM, Physical Properties Measurement System - PPMS and Electrical Resistivity and Impedance Measurement System. The VSM has autonomy to make magnetization and DC susceptibility measurements in a temperature range of 10 to 325K and in magnetic fields of up to 15 kOe. The PPMS already allows measurements in a temperature range of 1.9-400 K and in a magnetic field of up to 90 kOe. This equipment is equipped with techniques for VSM (sensitivity of 10-6 emu), AC magnetic susceptibility and magnetization (ACMS), and DC resistivity measurement. The electrical resistivity / impedance measurement system has autonomy for measurements in magnetic fields in the range of -20 to 20 kOe and in a frequency range from 15 kHz to 200 MHz.
Responsible researcher: Prof. Dr. João Maria Soares
Installation location: UERN

Sample Preparation Laboratory

In premises for the preparation and synthesis of samples, this laboratory is made up of the following equipment: fume hood for handling reagents, distilled water system, deionizer, muffle furnace and horizontal furnace for heat treatment up to 1300 oC, high energy planetary ball mill, gas supply line (H2, N2, O2, He), mass flow controllers, precision analytical balance, mechanical stirrer, heated magnetic stirrers, ultrasonic bath, refrigerator, hydraulic press, pH meter, and oven.
Responsible Researchers: Prof. Dr. João Maria Soares e Prof. Dr. Marco Morales Torres
Installation location: UERN

Structural Characterization Laboratory

Multi-user laboratory, composed of the following equipment: X-ray diffractometer - XRD, X-ray fluorescence spectrometer - XRF, and surface area analyzer - ASAP. The XRD is used in crystal phase indexing analysis, unit cell refinements, crystallite size determination and lattice microdeformation or quantitative crystal phase analysis. The XRF is used in elementary quantification (powders, solids and liquids) ranging from sodium (Na) to uranium (U). The ASAP is used for measurements of pores, pore volume and heat of absorption in various mesoporous and microporous materials.
Responsible Researchers: Prof. Dr. João Maria Soares e Prof. PhD. José Alzamir Pereira da Costa
Installation location: UERN

Spectroscopy Laboratory

This laboratory is equipped with a Mössbauer Spectrometer and an Electronic Paramagnetic Resonance (EPR) Spectrometer. The Mössbauer Spectrometer has autonomy to perform measurements in a large temperature range from 10 to 325K. Through the spectra it is possible to analyze microstructural and magnetic properties of materials that contain the element iron in the composition. EPR is another spectroscopic technique that enables measurements of the oxidation state of transition metals and free radicals, used in the characterization of magnetic materials, organic molecules, paleontological dating and archeology.
Responsible Researchers: Prof. Dr. João Maria Soares e Prof. PhD. José Alzamir P. da Costa
Installation location: UERN

Terahertz Optics Laboratory

A high resolution far infrared spectrometer is installed in this physical space, as well as sources, optical components, electromagnet and closed cycle cryostat. These equipments are used in several experiments to observe new optical effects associated with electromagnetic radiation at terahertz frequencies in semiconductor, nanoparticle, dielectric and antiferromagnetic samples. Additional measurements are possible using a mid-infrared spectrometer.
Responsible researcher: Prof. PhD. Thomas Dumelow e Prof. PhD. José Alzamir Pereira da Costa
Installation location: UERN

Electron Microscopy Laboratory

Multi-user laboratory, composed of: High Resolution Field Emission Scanning Electron Microscope (FESEM) with coupled Energy Dispersive Spectrometer (EDS) and Au Metallizer and C Coater. Using this equipment, high resolution images and elementary chemical analysis in inorganic and organic materials ranging from beryl (Be) to uranium (U) are obtained. The FESEM has a resolution of up to 1,000,000X (1nm) that allows the detailed study of the morphology of crystalline or amorphous materials.
Responsible Researchers: Prof. PhD. Thomas Dumelow e Prof. PhD. José Alzamir Pereira da Costa
Installation location: UERN

Laboratório de Microscopia Eletrônica

Laboratório de caráter multiusuário, composto por: Microscópio Eletrônico de Varredura de Alta Resolução por Emissão de Campo (MEV-FEG) com Espectrômetro de Energia Dispersiva (EDS) acoplado e Metalizador Au e Revestidor C. Através desses equipamentos são feitas imagens de alta resolução e análise química elementar em materiais inorgânicos e orgânicos que vai do berilo (Be) até o urânio (U). O MEV-FEG tem uma resolução de até 1.000.000X (1 nm) que permite o estudo detalhado da morfologia dos materiais cristalinos ou amorfos.
Responsible Researchers: Prof. PhD. Thomas Dumelow e Prof. PhD. José Alzamir Pereira da Costa
Installation location: UERN

Numerical Simulation and Data Analysis Laboratory

This is made up of a set of 5 rooms equipped with interconnected computers and a Cluster that works with simulations of physical systems in Magnetism, Astrophysics and Cosmology.
Responsible Researchers: Prof. Dr. José Ronaldo Pereira da Silva e Prof. Dr. Vamberto Dias de Mello
Installation location: UERN