Laser-induced phase changes of metallic Ti and W thin films
Por:
Evans R., Camacho-López S., Rangel-Rojo R., Camacho-López M., Pérez C.S., Camacho-López M.A., Esparza-García A.
Publicada:
1 ene 2004
Resumen:
In this work we present experimental findings in the field of laser matter interaction on the topic of laser induced oxidation and crystalline structure change. It has been shown in the past few years1.2 that lasers can be used to induce both oxidization of metals as well changes the crystal in the crystalline structure of the metal oxide. Conventional theory has proven to be mildly successful in predicting these effects with a thermal model; drawing its influence from the traditional method of inducing material change by baking the metal. We reformed a scan of varying values of laser intensity and accumulated fluence. We will show evidence of an increase in the oxygen content in Ti and W thin films irradiated by a frequency doubled Nd:YAG laser source with a pulse duration of 4ns and per pulse energies of 26 to 60?J (peak intensities of 1.7×107 to 3.8 × 107W/cm2.) We will also show that other effects, that may include crystalline structure change, are also occurring.
Filiaciones:
Evans R.:
Ctro. Invest. Cientfica/Educ. S.E., Km. 107 Carretera, Tijuana-Ensenada BC 22860, Mexico
Camacho-López S.:
Ctro. Invest. Cientfica/Educ. S.E., Km. 107 Carretera, Tijuana-Ensenada BC 22860, Mexico
Rangel-Rojo R.:
Ctro. Invest. Cientfica/Educ. S.E., Km. 107 Carretera, Tijuana-Ensenada BC 22860, Mexico
Camacho-López M.:
Ctro. Cie. Apl. y Desarrollo Tecn., Univ. Auton. Metropolitana I., Apdo. Postal 55-534, México D.F. 90000, Mexico
Pérez C.S.:
Ctro. Cie. Apl. y Desarrollo Tecn., Univ. Auton. Metropolitana I., Apdo. Postal 55-534, México D.F. 90000, Mexico
Camacho-López M.A.:
Ctro. Cie. Apl. y Desarrollo Tecn., Univ. Auton. Metropolitana I., Apdo. Postal 55-534, México D.F. 90000, Mexico
Esparza-García A.:
Ctro. Cie. Apl. y Desarrollo Tecn., Univ. Auton. Metropolitana I., Apdo. Postal 55-534, México D.F. 90000, Mexico
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