Is there any procedure to calculate anisotropy of magnetic nano particles from M(H) loop measured at room temperature? Kind input and provision of related literature/research papers will be highly appreciated.
Hello Muhammad Nauman !
Anisotropy plays an important role in understanding the nature of magnetic hysteresis loop for a given material. It refers to the fact that when no magnetic field is applied to a given magnetic material, the direction of magnetization prefers to point in a certain direction called easy axis. Figure shows a typical situation where for zero applied field, the magnetization M would point along the easy axis shown (α = 0). When a field H is applied, the magnetization is pulled towards the field direction. As the field is increased, the magnetization points closer to the field direction. For any intermediate values of α, the magnetization is being attracted in opposite directions, i.e., up by the field H and down by the anisotropy.
References:
http://nptel.ac.in/courses/115103038/3
Article Manipulate the magnetic anisotropy of nanoparticle assemblie...
http://www.ifmpan.poznan.pl/~urbaniak/Wyklady2012/urbifmpan2012lect5_03.pdf
Article Magnetic nanoparticles with combined anisotropy
https://ocw.mit.edu/courses/materials-science-and-engineering/3-024-electronic-optical-and-magnetic-properties-of-materials-spring-2013/lecture-notes/MIT3_024S13_2012lec25.pdf
https://www.lakeshore.com/Documents/Magnetic%20Anisotropy.pdf
Article Determining magnetic anisotropies from hysteresis loops
Thank you Oreci Escobar Da Silva for provision of links to the related literature.
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