Menu

Discussion Forum

New Discussion
查找

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Can the program Comsol be used for modeling of ferroelectrics phase transition?

Posted 2010年7月14日 GMT-4 04:11 4 Replies

Alexey Viskovatyh
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

4 Replies Last Post 2010年7月14日 GMT-4 12:30
Alexey Viskovatyh
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 2010年7月14日 GMT-4 09:17
Who can help how can Comsol be used for modeling of ferroelectrics below Curie point.
Who can help how can Comsol be used for modeling of ferroelectrics below Curie point.
Kai Herbrig
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 2010年7月14日 GMT-4 11:05
Using a step function in material properties (temperature depending magnetic permeability)? But, I've never used the ACDC-Module. Is it coupled with heat transfer (-> e.g. T_htgh)?

mu=flc1hs(T_htgh-T_curie,0.5)*mu_ferro
Using a step function in material properties (temperature depending magnetic permeability)? But, I've never used the ACDC-Module. Is it coupled with heat transfer (-> e.g. T_htgh)? mu=flc1hs(T_htgh-T_curie,0.5)*mu_ferro
Alexey Viskovatyh
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 2010年7月14日 GMT-4 12:21
I want to obtain the distribution of spontaneous polarization and electrical potantial which appear in ferroelectrics below Curie point. I'm modeling a composition material consisting of dielectric matrix and ferroelectrics grains. The polarization and potential submit partial differential system below Curie point. This partial differential system is non-linear and has following view:

æ•?? + ?•? - ?•?^3 = d?/dz-E0
?•?? = 4?•dP/dz

I want to obtain the distribution of spontaneous polarization and electrical potantial which appear in ferroelectrics below Curie point. I'm modeling a composition material consisting of dielectric matrix and ferroelectrics grains. The polarization and potential submit partial differential system below Curie point. This partial differential system is non-linear and has following view: æ•?? + ?•? - ?•?^3 = d?/dz-E0 ?•?? = 4?•dP/dz
Alexey Viskovatyh
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 2010年7月14日 GMT-4 12:30
æ•div(gradP) + a•P - b•P^3 = dFi/dz-E0
epsilon•div(gradFi) = 4pi•dP/dz
æ•div(gradP) + a•P - b•P^3 = dFi/dz-E0 epsilon•div(gradFi) = 4pi•dP/dz

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content