Abstract
Magnetostrictive behaviors of Fe100−x − Alx(x = 0 − 30 at.%)(001) single-crystal films under rotating magnetic fields are investigated along the two different crystallographic orientations, [100] and [110]. The behaviors of Fe and Fe90Al10 films show bath-tub like waveform along [100], easy magnetization axis, and triangular waveform along [110], hard magnetization axis, with respect to their four-fold magnetic anisotropy. On the other hand, the behaviors of Fe80Al20 film are different from those of Fe or Fe90Al10 film. The output of the film along [100] shows a strong magnetic field dependence. The Fe70Al30 film shows similar magnetostrictive behaviors along both [100] and [110] reflecting its magnetic properties, which are almost same for the both directions. The growth of ordered phase (B2) in Fe80Al20 and Fe70Al30 films is considered to have affected their magnetostrictive behaviors. The Al content dependence on λ100 and λ111 values shows similar tendency to that reported for the bulk samples but the values are slightly different. The Fe90Al10(001) single-crystal film shows a large magnetostriction along [100] under a very small magnetic field of 0.02 kOe, which is comparable to the saturated one, and changes the value abruptly in relation to the angle of applied magnetic field.
Highlights
An energy harvest device which generates electric power from mechanical vibration is a strong candidate as micro-power supply source.1 Soft magnetic materials with large magnetostriction properties such as Fe-Ga alloys have been studied for such applications.2 For micro-sensor devices, the material needs to be in a form of thin film which can be fabricated into micro-devices usable as sensors or power supply sources
The Al content dependence on λ100 and λ111 values shows similar tendency to that reported for the bulk samples but the values are slightly different
In order to investigate the possibility of Fe-Al thin films for micro-energy harvest device applications, fundamental magnetostrictive behaviors of Fe-Al(001) single-crystal films are studied under rotating magnetic fields up to 1 kOe
Summary
An energy harvest device which generates electric power from mechanical vibration is a strong candidate as micro-power supply source. Soft magnetic materials with large magnetostriction properties such as Fe-Ga alloys have been studied for such applications. For micro-sensor devices, the material needs to be in a form of thin film which can be fabricated into micro-devices usable as sensors or power supply sources. An energy harvest device which generates electric power from mechanical vibration is a strong candidate as micro-power supply source.. Soft magnetic materials with large magnetostriction properties such as Fe-Ga alloys have been studied for such applications.. For micro-sensor devices, the material needs to be in a form of thin film which can be fabricated into micro-devices usable as sensors or power supply sources. The alloys are already used in commercial energy harvesters in various forms of bulk materials.. In order to investigate the possibility of Fe-Al thin films for micro-energy harvest device applications, fundamental magnetostrictive behaviors of Fe-Al(001) single-crystal films are studied under rotating magnetic fields up to 1 kOe. Based on the experimental results, the relationships between magnetostrictive behavior and magnetization rotation of Fe-Al films are discussed
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
