A new twist on organic spintronics: controlling transport in organic sandwich devices using fringe fields from ferromagnetic films

2013 ◽  
Author(s):  
Markus Wohlgenannt ◽  
Michael E. Flatté ◽  
Nicholas J. Harmon ◽  
Fujian Wang ◽  
Andrew D. Kent ◽  
...  
Keyword(s):  
Ferromagnetic Films ◽  
Organic Spintronics ◽  
Fringe Fields

Electron Microscope Observations of Magnetic and Electric Effects

1970 ◽  
Vol 28 ◽  
pp. 430-431
Author(s):  
John Silcox
Keyword(s):  
Electron Microscope ◽  
Electric Fields ◽  
Magnetic Image ◽  
Magnetic Effects ◽  
Ferromagnetic Films ◽  
Diffraction Contrast ◽  
Microscope Images ◽  
Electric Effects ◽  
Image Detail

Several aspects of magnetic and electric effects in electron microscope images are of interest and will be discussed here. Clearly electrons are deflected by magnetic and electric fields and can give rise to image detail. We will review situations in ferromagnetic films in which magnetic image effects are the predominant ones, others in which the magnetic effects give rise to rather subtle changes in diffraction contrast, cases of contrast at specimen edges due to leakage fields in both ferromagnets and superconductors and some effects due to electric fields in insulators.

A method for measuring exchange stiffness in ferromagnetic films

2011 ◽  
Vol 109 (7) ◽  
pp. 07B765 ◽  
Author(s):  
Erol Girt ◽  
W. Huttema ◽  
O. N. Mryasov ◽  
E. Montoya ◽  
B. Kardasz ◽  
...  
Keyword(s):  
Ferromagnetic Films

Critical curves of thin ferromagnetic films with antiferromagnetic exchange coupling

1971 ◽  
Vol 34 (4) ◽  
pp. 223-224 ◽  
Author(s):  
B. Kuhlow ◽  
M. Lambeck ◽  
H. Schroeder-Fürst ◽  
J. Wortmann
Keyword(s):  
Exchange Coupling ◽  
Antiferromagnetic Exchange ◽  
Ferromagnetic Films ◽  
Critical Curves

A NEW TYPE OF SURFACE SPIN WAVE IN FERROMAGNETIC FILMS

1969 ◽  
Vol 15 (9) ◽  
pp. 297-299 ◽  
Author(s):  
R. E. De Wames ◽  
T. Wolfram
Keyword(s):  
Spin Wave ◽  
Ferromagnetic Films ◽  
New Type ◽  
Surface Spin

scholarly journals One-dimensional in-plane edge domain walls in ultrathin ferromagnetic films

Nonlinearity ◽  
2018 ◽  
Vol 31 (3) ◽  
pp. 728-754 ◽  
Author(s):  
Ross G Lund ◽  
Cyrill B Muratov ◽  
Valeriy V Slastikov
Keyword(s):  
Domain Walls ◽  
One Dimensional ◽  
Ferromagnetic Films

Parametrically Excited Electrostatic MEMS Cantilever Beam With Flexible Support

2016 ◽  
Vol 139 (2) ◽  
Author(s):  
Mark Pallay ◽  
Shahrzad Towfighian
Keyword(s):  
Cantilever Beam ◽  
Large Amplitude ◽  
Chaotic Behavior ◽  
Signal To Noise Ratio ◽  
Mass Sensors ◽  
Flexible Support ◽  
Sensing Applications ◽  
Electrostatic Mems ◽  
Fringe Fields ◽  
Steady State Amplitude

Parametric resonators that show large amplitude of vibration are highly desired for sensing applications. In this paper, a microelectromechanical system (MEMS) parametric resonator with a flexible support that uses electrostatic fringe fields to achieve resonance is introduced. The resonator shows a 50% increase in amplitude and a 50% decrease in threshold voltage compared with a fixed support cantilever model. The use of electrostatic fringe fields eliminates the risk of pull-in and allows for high amplitudes of vibration. We studied the effect of decreasing boundary stiffness on steady-state amplitude and found that below a threshold chaotic behavior can occur, which was verified by the information dimension of 0.59 and Poincaré maps. Hence, to achieve a large amplitude parametric resonator, the boundary stiffness should be decreased but should not go below a threshold when the chaotic response will appear. The resonator described in this paper uses a crab-leg spring attached to a cantilever beam to allow for both translation and rotation at the support. The presented study is useful in the design of mass sensors using parametric resonance (PR) to achieve large amplitude and signal-to-noise ratio.

Sign in / Sign up

Export Citation Format

Share Document