last updated: 27June 2002

Develos-Bagarinao, Katherine

Katherine Develos-Bagarinao is currently a member of the Superconductor Technology Group of the Energy Electronics Institute, National Institute of Advanced Industrial Science and Technology Agency (AIST) in Japan. Dr. Develos-Bagarinao received her BS and MS degrees in Physics from the University of the Philippines in 1994 and 1996, respectively, and her doctorate degree in Engineering from Yamagata University in 1999. Her present work involves the study of large-area superconducting thin films fabricated by pulsed laser deposition (PLD) method. She is also a member of the Japan Society of Applied Physics.

Research

PULSED LASER DEPOSITION OF THIN FILMS

Conceptually and experimentally, pulsed laser ablation is an extremely simple technique, probably the simplest among all thin film growth techniques. It consists of a target holder and a substrate holder housed in a vacuum chamber. A high-power laser is used as an external energy source to vaporize materials and to deposit thin films. A set of optical components is used to focus and raster the laser beam over the target surface. The decoupling of the vacuum hardware and the evaporation power source makes this technique so flexible that it is easily adaptable to different operational modes without the constraints imposed by the use of internally powered evaporation sources. The advantages of pulsed laser ablation are flexibility, fast response, energetic evaporants, and conguent evaporation.

In our laboratory, the pulsed laser ablation system is used to deposit YBa2Cu3O7-y (YBCO) superconducting thin films on buffered Al₂O₃ and CeO₂, BaO, and Y-stabilized zirconia (YSZ) for use as a buffer layer for the growth of YBCO.

[More in Saliksik: Research]