Help required for modelling device in comsol using electromagnetics

Dear All,

I am a new user of comsol. I want to model a device where i want to pass current in copper coil and place nanomagnets above it so that the nanomagnets start orientating according to the perpendicular magnetic feild generated by copper.

Can anyone suggest me some related examples to this which can help me to understand how to model this device?

Thanks in advance.