Search results for "Microwave harmonic generation"

showing 2 items of 2 documents

Microwave harmonic emission in MgB2 superconductor: Comparison with YBA2CU3O7

2006

We report results of microwave second-harmonic generation in ceramic samples of MgB2, prepared by different methods. The SH signal has been investigated as a function of the temperature and the static magnetic field. The results are discussed in the framework of models reported in the literature. We show that the peculiarities of the SH signal are related to the specific properties of the sample. A comparison with the results obtained in ceramic and crystalline YBa2Cu3O7 shows that the second-harmonic emission in MgB2 is weaker than that observed in ceramic YBa2CuO7. (c) 2006 Wiley Periodicals, Inc.

FREQUENCIESSuperconductivityMaterials scienceCondensed matter physicsSettore FIS/01 - Fisica SperimentaleCondensed Matter PhysicsMagnetostaticsSignalAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsTHIN-FILMSmagnesium diboridevisual_artHarmonicvisual_art.visual_art_mediumSINGLE-CRYSTALSCeramicElectrical and Electronic EngineeringTCMicrowavemicrowave harmonic generation
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Nonlinear Microwave Spectrometer for Investigating High-Tc Superconductors

2000

We describe a nonlinear microwave spectrometer, which can be conveniently used for investigating the harmonic generation at microwave frequencies in high-Tc superconductors. The use of this technique allows highlighting mechanisms responsible for the nonlinear microwave response of high-Tc superconductors as well as measuring specific characteristics of the investigated samples. We report a brief review of the main results obtained.

Nonlinear microwave spectrometerSettore FIS/01 - Fisica SperimentaleHigh-Tc superconductorMicrowave harmonic generation
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