Dear Erfan, if you want to insert material known properties in a simulation model, you can explicitly define them in the section "Material" using a "Blank Material"; do you know the APC-840 values? Gianluca

As per Gianluca's answer, you can define your own materials within COMSOL, as shown in this video:

https://www.comsol.fr/video/creating-new-material-comsol-multiphysics

Of course, the necessary properties required will depend on the physics that you are using in your model. If you have already defined the physics the missing properties will be identified in the 'materials' section.

Dear Gianluca,

thanks for your feedback. Yes I have some of it’s properties and I entered them in a blank material, but COMSOL requests more detailed properties before running the simulation.

What other properties Comsol requires? Are thermal properties (which are not listed in your datasheet)? See the following paper in RG archive. Gianluca

Article Magnetoelectric Properties in Piezoelectric and Magnetostric...

like compliance and coupling matrices