physics

Magnetic spin vortex disc

Magnetic spin vortex disc is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Magnetic spin vortex disc rather than just read about it. In short: Magnetic material synthesis and characterization technology continue to improve, allowing for the production of various shapes, sizes, and compositions of magnetic material to be studied and tuned for improved properties. One of the places which has seen great advancement is in the synthesis of magnetic materials at nanometer length scales.

Key takeaways

Magnetic spin vortex disc belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Magnetic spin vortex disc to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Magnetic spin vortex disc from memory before moving on to harder problems.

Reference excerpt

Magnetic material synthesis and characterization technology continue to improve, allowing for the production of various shapes, sizes, and compositions of magnetic material to be studied and tuned for improved properties. One of the places which has seen great advancement is in the synthesis of magnetic materials at nanometer length scales. Nanoparticle research has seen a great deal of interest in a number of fields as many phenomena can be explained by what is occurring on the nanoscale, which can be probed more effectively using nanometer sized materials. One unique type of materials which have seen a recent surge in research interest have been known as "nanoflakes" where they resemble flakes or discs of nanometer thickness and micrometer dimensions. Nanomaterials of this shape have seen use in a number of fields including energy storage, as [electrodes] of electrochemical cells, and in cancer therapy to kill cancer cells.

References D.-H. Kim, E. A. Rozhkova, I. V Ulasov, S. D. Bader, T. Rajh, M. S. Lesniak, and V. Novosad, “Biofunctionalized magnetic-vortex microdiscs for targeted cancer-cell destruction.,” Nature materials, vol. 9, no. 2, pp. 165–71, Feb. 2010. R. P. Cowburn, D. K. Koltsov, a. O. Adeyeye, and M. E. Welland, “Single-Domain Circular Nanomagnets,” Physical Review Letters, vol. 83, no. 5, pp. 1042–1045, Aug. 1999. S. Jain, V. Novosad, F.Y. Fradin, J.E. Pearson, V. Tiberkevich, A.N. Slavin, S.D. Bader, "From chaos to selective ordering of vortex cores in interacting mesomagnets", Nature Communications, Vol. 3, no.1330 DOI: doi:10.1038/ncomms2331 (2012) Valentyn Novosad and Elena A. Rozhkova. "Ferromagnets-based multifunctional nanoplatform for targeted cancer therapy" Biomedical Engineering, Trends in Materials Science. Chapter 18. Buchanan, K. S., Roy, P. E., Grimsditch, M., Fradin, F. Y., Guslienko, K. Yu., Bader, S. D., and Novosad, V. Soliton pair dynamics in patterned ferromagnetic ellipses. Nature Physics 1, 172-176 (2005). Xiaobin Zhu, Vitali Metlushko, Bojan Ilic, and Peter Grutter."Direct observation of Magnetostatic Coupling of Chain Arrays of Magnetic Disks" IEEE Transactions on Magnetics. Vol. 39. no. 5, September 2003. E.A. Rozhkova, V. Novosad, D.H. Kim, J. Pearson, and R Divan."Ferromagnetic microdisks as carriers for biomedical applications" J. Applied Physics. 105. 2009. Mi-Young Im, Peter Fischer, Keisuke Yamada, Tomonori Sato, Shinya Kasai, Yoshinobu Nakatani & Teruo Ono “Symmetry breaking in the formation of magnetic vortex states in permalloy nanodisk “ Nature Communications. (2012). 3. 983 T. Shinjo, T. Okuno, R. Hassdorf, K. Shigeto, T. Ono, “Magnetic Vortex Core Observation in Circular Dots of Permalloy ” Science, vol. 289. no. 5481, pp. 930 – 932 (2000) A Wachowiak, J. Wiebe, M. Bode, O. Pietzsch, M. Morgenstern, and R. Wiesendanger, “Direct observation of internal spin structure of magnetic vortex cores.,” Science, vol. 298, no. 5593, pp. 577–80, Oct. 2002. J. Raabe, R. Pulwey, R. Sattler, T. Schweinböck, J. Zweck, and D. Weiss, “Magnetization pattern of ferromagnetic nanodisks,” Journal of Applied Physics, vol. 88, no. 7, p. 4437, 2000.

Worked examples

Example 1 — a first encounter with Magnetic spin vortex disc

Start with the simplest possible case. Write down what Magnetic spin vortex disc claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Magnetic spin vortex disc before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Magnetic spin vortex disc ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Magnetic spin vortex disc

In research: Magnetic spin vortex disc appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Magnetic spin vortex disc in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Magnetic spin vortex disc is common in secondary-school and first-year university syllabi. It links to neighbouring topics Nanoelectronics, Nanoparticles, so understanding it makes those chapters shorter.
In everyday life: Look for Magnetic spin vortex disc outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Magnetic spin vortex disc in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Magnetic spin vortex disc means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Magnetic spin vortex disc out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Magnetic spin vortex disc in simple terms?

Why does Magnetic spin vortex disc matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Magnetic spin vortex disc?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Magnetic spin vortex disc.