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M.H. Ploof is known for Tree Secrets (2021), Oneida Flats (2023) and My Dearest Jane.
- Writer
- M.H. Ploof
M.H. Ploof. Writer: Tree Secrets. M.H. Ploof is known for Tree Secrets (2021), Oneida Flats (2023) and My Dearest Jane.
- Values on The Magnetization Curves
- Misconception 1: Coercivity
- Misconception 2: Induction Does Not Saturate
- Misconception 3: Symmetry
- Misconception 4: Scale
- Final Thoughts
- References and Further Reading
If you don’t know how to read a magnetic hysteresis curve, 1. I am impressed that you found this page without being linked from one of my easier articles, 2. I wrote an entire articlededicated to understanding the magnetic hysteresis curve, if you want to learn more, and 3. I’ll provide a quick summary right now, in collapsable text Now, let’s disc...
Coercivity, or coercive force, is the strength of the applied magnetic field needed to bring the magnetic induction to zero. In other words, it’s the y-intercepts on the B-H curve. Specifically, the negative y-intercept is , and the positive y-intercept is . This same point on the M-H curve is , or intrinsic coercivity. Many people assume , but tha...
This misconception seems obvious to me if you understand the difference between induction (B) and magnetization (M), but I didn’t survey 300 textbooks, so I’ll shut up. The term “saturation” suggests that there is an upper limit. In magnetization, there is an upper limit. No matter how strong the applied magnetic field (H), at some point M will sta...
These B-H or M-H curves are always drawn symmetrical, but that’s not actually necessary. In many cases, it may be “easier” or “harder” to reach depending on the crystallographic direction. However, the value of is always the same, regardless of whether the direction is “easy” or “hard.” It may take a stronger applied field to get there, but the sam...
Yep, I have propagated this misconception even on this website! When we discuss hard and soft magnets, we often use this illustration: However, it should really look like this: Yeah, kinda hard to see that, so you can tell why the misconception arises. If you looked at actual values of , you’d find that hard magnets typically have values 1,000-10,0...
So there you have it! The differences between magnetization (M) and induction (B). You learned how to convert from M to B, what the equivalent points on the M-H and B-H curves are, and common mistakes people make when using M instead of B. As a bonus, we talked about some other mistakes that textbooks sometimes make when drawing M-H and B-H curves.
The journal articlewhich inspired this post. Click hereto find out more about magnetic susceptibility and permeability. Hereyou will find more information on classes of magnetic materials.
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M.H. Ploof. Сценарист.
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In re M.H., Juvenile (21-AP-215) 21-AP-215: 2/11/2022: Scot L. Kline: Joshua Many v. State of Vermont et al. (21-AP-223) 21-AP-223: 2/11/2022: Robert P. Gerety, Jr.
