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Dark-field scattering spectroscopy to study transducer stability for heat-assisted magnetic recording.
- Source :
-
Journal of Applied Physics . 2015, Vol. 117 Issue 17, p17D132-1-17D132-4. 4p. 6 Graphs. - Publication Year :
- 2015
-
Abstract
- Thermal stability of optical near field transducers is an important issue for heat-assisted magnetic recording (HAMR), which affects HAMR system lifetime. In this paper, dark-field scattering spectroscopy was used to study the stability of nanometer-scaled Au lollipop transducers that were subjected to thermal annealing. Variation in relative peak intensity and red-shifting in peak position can be observed in scattering spectra for transducer after annealing. Based on the optical characterizations on Au thin films and calculations of Mie scattering by finite-difference time domain simulations, the measured changes in transducer scattering properties can reflect annealing-induced variations in optical properties and dimensional feature size for the Au lollipop transducer. Dark-field scattering spectroscopy can be a promising method to examine HAMR near field transducer thermal stability. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SPECTRUM analysis
*EXPANSION of liquids
*HEAT losses
*HEAT pipes
*HIGH temperatures
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 117
- Issue :
- 17
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 102606521
- Full Text :
- https://doi.org/10.1063/1.4916997