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anithangaraj
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What is the usage of the squareness in the thin film magnetic property studies?
Squareness of the magnetic properties
- Thread starter anithangaraj
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In summary, the usage of "per square" in thin film magnetic property studies is simply a way to account for the dimensions of the material being measured. It serves as a reminder that a geometric factor must be applied in order to obtain a measurable value. Examples of this can be seen in sheet resistance, where the unit is Ohms/square, and in calculating resistance between two points, where the ratio of length to width must be considered.
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f95toli
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I am not sure what you are referring to...But I'll guess
Are you asking why certain properties are stated as "per square"? If so it just because it is the way the dimensions work out. "sq" is not a "proper" unit, it is just there as a reminder .
The easiest example would be sheet resistance which has the unit of Ohms/square (if you work out the dimensions you'll see that is "should" actually only be ohms).
Now, if you want to calculate the resistance (in ohms) between two points you have to multiply by the length and divide by the width; this ratio is dimensionless but it still needs to be there to get the right answer.
Hence, the answer to your question is that it is just there to remind you that it is a material parameter, and that it needs to be multipled by a geometric factor to give you something you can actually measure.
Are you asking why certain properties are stated as "per square"? If so it just because it is the way the dimensions work out. "sq" is not a "proper" unit, it is just there as a reminder .
The easiest example would be sheet resistance which has the unit of Ohms/square (if you work out the dimensions you'll see that is "should" actually only be ohms).
Now, if you want to calculate the resistance (in ohms) between two points you have to multiply by the length and divide by the width; this ratio is dimensionless but it still needs to be there to get the right answer.
Hence, the answer to your question is that it is just there to remind you that it is a material parameter, and that it needs to be multipled by a geometric factor to give you something you can actually measure.
1. What is meant by "squareness" in magnetic properties?
Squareness refers to the degree to which a magnetic material can retain its magnetization when exposed to an external magnetic field. A higher squareness value indicates a stronger ability to maintain its magnetization, while a lower value indicates a weaker ability.
2. How is squareness measured in magnetic materials?
Squareness is typically measured by plotting the magnetization curve of a material, which shows how its magnetization changes as the external magnetic field strength increases. The squareness value is then calculated by dividing the magnetization at the coercive field (the point where the material loses its magnetization) by the saturation magnetization (the maximum possible magnetization for the material).
3. What factors can affect the squareness of a magnetic material?
The squareness of a magnetic material can be affected by its composition, microstructure, and processing methods. Additionally, external factors such as temperature and applied stress can also impact the squareness of a material.
4. Why is squareness an important property in magnetic materials?
Squareness is an important property because it reflects the stability and strength of a material's magnetization. Materials with high squareness values are desirable for applications requiring strong and stable magnetization, such as in permanent magnets and magnetic data storage devices.
5. How can the squareness of a magnetic material be improved?
The squareness of a magnetic material can be improved through careful control of its composition, microstructure, and processing methods. Using materials with high magnetic anisotropy (the tendency for a material to prefer a certain direction of magnetization) and optimizing the processing conditions can also lead to higher squareness values.
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