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Perpendicular magnetic fields in cantilever beam magnetometry
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10.1063/1.1778479
/content/aip/journal/jap/96/5/10.1063/1.1778479
http://aip.metastore.ingenta.com/content/aip/journal/jap/96/5/10.1063/1.1778479
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Figures

Image of FIG. 1.
FIG. 1.

Schematic illustration of our cantilever beam magnetometer using a lock-in assisted capacitance technique (right) to detect the substrate deflection; epitaxial configuration and orthogonal crystal axes of the hexagonal MnAs film deposited onto the GaAs(001) cantilever beam substrate are indicated.

Image of FIG. 2.
FIG. 2.

Stress evolution upon applying perpendicular magnetic fields , measured by CBM: (a) , initial magnetization direction is easy axis along the cantilever beam length, magnetizing field is applied perpendicular to the film plane ( axis of MnAs); increasing (decreasing) denoted by open (filled) dots. (b) , initial magnetization direction is easy axis along the cantilever beam length, magnetizing field is applied in the film plane along the cantilever beam width ( axis of MnAs). (c) with easy axes parallel to length and width of the cantilever beam (see Ref. 33); initial magnetization direction is along the cantilever beam length, magnetizing field is applied in the film plane along the cantilever beam width.

Image of FIG. 3.
FIG. 3.

Magnetic field dependence of the torque effect in cantilever beam experiments calculated by Eq. (14).

Image of FIG. 4.
FIG. 4.

Method of separating the magnetoelastic coupling from torque effects in cantilever beam experiments, where the film magnetization is rotated out of the film plane (see Sec. IV C for details): Curves 1 and 2 correspond to the involved stress change when the magnetizing field is tilted by and against the film normal, respectively. Adding curves 1 and 2 and dividing the results by 2 eliminate torque effects and yield the magnetoelastic stress as a function of plotted as curve 3; note that curve 3 reveals the same field dependence of the stress as the curve in Fig. 2(b).

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/content/aip/journal/jap/96/5/10.1063/1.1778479
2004-09-01
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Perpendicular magnetic fields in cantilever beam magnetometry
http://aip.metastore.ingenta.com/content/aip/journal/jap/96/5/10.1063/1.1778479
10.1063/1.1778479
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