Does anyone know about crystal cut?

[overgift]

Hi all,

I'm using comsol to do surface acoustic wave simulation. And all the material I read mentioned about crystal cut, like xy-cut, yz-cut, 30° rotated yx-cut. And in COMSOL piezoelectric application mode I have to specify the material orientation, like xy, yx, zx, xz, etc. I'd like to ask if there is relation between this two, which means the material cut determines the material orientation in comsol.

And even if not, I still want to know what exactly is crystal cut(I mean how to cut it, I can't imagine) and what exactly is material orientation. I searched many materials on internet but didnt find an easy-to-understand one.

Thanks in advance.

CC

 

[Navin A S]

Crystal cut is the orientation of a crystal when it is cut, sliced, or polished along certain planes. The orientation will determine how the light reflects off the surface and how strong the crystalline structure is. Material orientation in COMSOL refers to the orientation of the piezoelectric material relative to the crystal cut, i.e. xy, yx, zx, etc. To understand this better, you can refer to diagrams that illustrate the different crystal cuts and orientations. For example, a xy-cut would be when the crystal is cut along a plane parallel to the x and y axes, resulting in a rectangular shape. The material orientation for this would be xy, meaning the x and y axes are aligned with the crystal cut. Similarly, a yz-cut would involve cutting the crystal along a plane parallel to the y and z axes, resulting in a rectangular shape. The material orientation for this would be yz, meaning the y and z axes are aligned with the crystal cut.

 

[oswaler]

:

Hello,

I can provide some information on crystal cut and material orientation. Crystal cut refers to the specific orientation of a crystal's atomic lattice. This is important because the properties of a crystal, such as its piezoelectric properties, can vary depending on the direction in which it is cut.

The material orientation in COMSOL refers to the direction in which the material is oriented within the simulation. This is important because it affects how the simulation will behave and the results it will produce.

There is a relationship between crystal cut and material orientation in COMSOL, as the crystal cut determines the material's inherent orientation. This means that if you specify an xy-cut crystal, the material orientation in COMSOL will also be in the xy direction.

To understand crystal cut, it may be helpful to think of a crystal as a stack of layers, each layer made up of repeating atomic structures. When a crystal is cut, it is essentially slicing through these layers at a specific angle. The way in which the crystal is cut can have a significant impact on its properties.

Material orientation, on the other hand, refers to the direction in which the crystal is placed within the simulation. This can be specified using the different axes (xy, yx, zx, etc.) in COMSOL.

I understand that this can be a complex topic to grasp, but there are many resources available online that can help explain it in simpler terms. I suggest looking for visual aids, such as diagrams or videos, to help with understanding. I hope this helps answer your question.