Time resolved Kerr microscopy: Magnetization dynamics in thin film write heads

1999 ◽  
Vol 35 (2) ◽  
pp. 637-642 ◽  
Author(s):  
C.H. Back ◽  
J. Heidmann ◽  
J. McCord
Keyword(s):  
Thin Film ◽  
Magnetization Dynamics ◽  
Time Resolved ◽  
Write Heads

Picosecond time-resolved magnetization dynamics of thin-film heads

1996 ◽  
Vol 79 (8) ◽  
pp. 5898 ◽  
Author(s):  
M. R. Freeman ◽  
J. F. Smyth
Keyword(s):  
Thin Film ◽  
Magnetization Dynamics ◽  
Time Resolved

Frequency and transient response of yoke flux for 45/55 NiFe and CoTaZr thin film write heads

1999 ◽  
Vol 35 (5) ◽  
pp. 2508-2510 ◽  
Author(s):  
J. Jury ◽  
P. George ◽  
J.H. Judy
Keyword(s):  
Thin Film ◽  
Transient Response ◽  
Write Heads

A Comparison of Radiation Versus Convection Calibration of Thin-Film Heat Flux Gauges

1999 ◽  
Author(s):  
D. E. Smith ◽  
J. V. Bubb ◽  
O. Popp ◽  
T. E. Diller ◽  
Stephen J. Hevey
Keyword(s):  
Thin Film ◽  
Heat Flux ◽  
Surface Temperature ◽  
Temperature Response ◽  
Turbine Rotor ◽  
Separate Experiment ◽  
Measured Temperature ◽  
Conduction Model ◽  
Time Resolved ◽  
Turbine Rotor Blade

Abstract A transient, in-situ method was examined for calibrating thin-film heat flux gauges using experimental data generated from both convection and radiation tests. Also, a comparison is made between this transient method and the standard radiation substitution calibration technique. Six Vatell Corporation HFM-7 type heat flux gauges were mounted on the surface of a 2-D, first-stage turbine rotor blade. These gauges were subjected to radiation from a heat lamp and in a separate experiment to a convective heat flux generated by flow in a transonic cascade wind tunnel. A second set of convective tests were performed using jets of cooled air impinging on the surface of the gauges. Direct measurements were simultaneously taken of both the time-resolved heat flux and surface temperature on the blade. The heat flux input was used to predict a surface temperature response using a one-dimensional, semi-infinite conduction model into a substrate with known thermal properties. The sensitivities of the gauges were determined by correlating the semi-infinite predicted temperature response to the measured temperature response. A finite-difference code was used to model the penetration of the heat flux into the substrate in order to estimate the time for which the semi-infinite assumption was valid. The results from these tests showed that the gauges accurately record both the convection and radiation modes of heat transfer. The radiation and convection tests yielded gauge sensitivities which agreed to within ±11%.

Large scale alignment of a lamellar block copolymer thin film via electric fields: a time-resolved SFM study

Soft Matter ◽  
2006 ◽  
Vol 2 (12) ◽  
pp. 1089-1094 ◽  
Author(s):  
Violetta Olszowka ◽  
Markus Hund ◽  
Volker Kuntermann ◽  
Sabine Scherdel ◽  
Larisa Tsarkova ◽  
...  
Keyword(s):  
Thin Film ◽  
Block Copolymer ◽  
Electric Fields ◽  
Large Scale ◽  
Time Resolved ◽  
Large Scale Alignment

scholarly journals Time-resolved scanning Kerr microscopy of flux beam formation in hard disk write heads

2016 ◽  
Vol 119 (23) ◽  
pp. 233903 ◽  
Author(s):  
Robert A. J. Valkass ◽  
Timothy M. Spicer ◽  
Erick Burgos Parra ◽  
Robert J. Hicken ◽  
Muhammad A. Bashir ◽  
...  
Keyword(s):  
Hard Disk ◽  
Time Resolved ◽  
Write Heads ◽  
Beam Formation

Tuning of magnetization dynamics in sputtered CoFeB thin film by gas pressure

2012 ◽  
Vol 111 (7) ◽  
pp. 07A304 ◽  
Author(s):  
Feng Xu ◽  
Qijun Huang ◽  
Zhiqin Liao ◽  
Shandong Li ◽  
C. K. Ong
Keyword(s):  
Thin Film ◽  
Gas Pressure ◽  
Magnetization Dynamics
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