Renato Bisaro | THALES - Academia.edu (original) (raw)

Papers by Renato Bisaro

2015 21st International Workshop on Thermal Investigations of ICs and Systems (THERMINIC), 2015

Proceedings of the 2000 Third IEEE International Caracas Conference on Devices, Circuits and Systems (Cat. No.00TH8474), 2000

This paper describes a new method for the mapping of local temperatures in the active region of h... more This paper describes a new method for the mapping of local temperatures in the active region of high power III-V semiconductor transistors for microwave applications. The measurement technique involves scanning a focused laser beam at the surface of a chip inside its package, while the photoluminescence (PL) spectra produced are recorded sequentially for each position of the laser beam. The

Microelectronic Engineering

Revista Mexicana de Fisica

Physica C Superconductivity

The structure and oxygen content of YBaCuO thin films were measured at room temperature combining... more The structure and oxygen content of YBaCuO thin films were measured at room temperature combining XRD analysis of individual YBaCuO grains with recently developed IBA techniques. As a function of the conditions of the sample cooling (dT/dt, pO(2)), the similar to 500 nm thick YBaCuO samples grown on LaAlO3 single crystal substrates can exhibit either orthorhombic (ORT) or quasitetragonal (TETR) structure. The former is obtained by low cooling rates at high oxygen pressure (0.2-latm) whereas the later needs a high cooling rates (greater than or equal to 100 degrees C/min) and can be performed at low oxygen pressure. Both type of samples are fury oxygenated (similar to O-7) YBaCuO compounds with Tc onset of 91 K and Delta Tc approximate to 1K. The resistivity of the (TETR) compound is about 3 times higher than that of the (ORT) one and the intercept of the rho(T) curve crosses the axis of the resistivity at a large positive value, as expected for the tetragonal compound of the 1-2-3 f...

2015 21st International Workshop on Thermal Investigations of ICs and Systems (THERMINIC), 2015

Proceedings of the 2000 Third IEEE International Caracas Conference on Devices, Circuits and Systems (Cat. No.00TH8474), 2000

This paper describes a new method for the mapping of local temperatures in the active region of h... more This paper describes a new method for the mapping of local temperatures in the active region of high power III-V semiconductor transistors for microwave applications. The measurement technique involves scanning a focused laser beam at the surface of a chip inside its package, while the photoluminescence (PL) spectra produced are recorded sequentially for each position of the laser beam. The

Microelectronic Engineering

Revista Mexicana de Fisica

Physica C Superconductivity

The structure and oxygen content of YBaCuO thin films were measured at room temperature combining... more The structure and oxygen content of YBaCuO thin films were measured at room temperature combining XRD analysis of individual YBaCuO grains with recently developed IBA techniques. As a function of the conditions of the sample cooling (dT/dt, pO(2)), the similar to 500 nm thick YBaCuO samples grown on LaAlO3 single crystal substrates can exhibit either orthorhombic (ORT) or quasitetragonal (TETR) structure. The former is obtained by low cooling rates at high oxygen pressure (0.2-latm) whereas the later needs a high cooling rates (greater than or equal to 100 degrees C/min) and can be performed at low oxygen pressure. Both type of samples are fury oxygenated (similar to O-7) YBaCuO compounds with Tc onset of 91 K and Delta Tc approximate to 1K. The resistivity of the (TETR) compound is about 3 times higher than that of the (ORT) one and the intercept of the rho(T) curve crosses the axis of the resistivity at a large positive value, as expected for the tetragonal compound of the 1-2-3 f...