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Simple Magnetoresistance Model

Posted Aug 12, 2013, 5:58 a.m. EDT Low-Frequency Electromagnetics Version 5.0 1 Reply

Sean Lyttle
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Hi, my apologies in advance for what is probably a trivial question - I am new to Comsol. I am attempting to create a simple model of magnetoresistance. I have defined a permanent magnet in the MFNC physics module and a current-carrying wire in the MEF module. I have a domain probe measuring the Z component of magnetic flux density (mfnc.Bz) through the relevant wire section and I would like to use this value to scale either the resistance of or current through the wire in the MEF module. Right now I get a 'failed to evaluate variable' error. I have tried using two solvers but I get the same error. Perhaps I am going about this the wrong way? Any advice would be appreciated.
1 Reply Last Post Sep 29, 2016, 7:40 a.m. EDT
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Hello Sean Lyttle

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Huaa Wen
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Posted: 8 years ago Sep 29, 2016, 7:40 a.m. EDT
Hello Sean!

I'm a beginner for COMSOL Multiphysics, and I need to simulate the 2D magnetoresistance of a PN Junction.I'm using the comsol 5.0, but I don't know which physics I should select in the "Add Physics" section in comsol.Fortunately,I found your post in the comsol discussion forum,so I decide to send the message to you,I hope that you can help me to solve the problem. If it's not a problem for you ,please describe in detail these steps of modelling. I will also very much appreciate for your corresponding recommendations in this modelling question.Thank you very much!

Sincerely,Huaa Wen
Hello Sean! I'm a beginner for COMSOL Multiphysics, and I need to simulate the 2D magnetoresistance of a PN Junction.I'm using the comsol 5.0, but I don't know which physics I should select in the "Add Physics" section in comsol.Fortunately,I found your post in the comsol discussion forum,so I decide to send the message to you,I hope that you can help me to solve the problem. If it's not a problem for you ,please describe in detail these steps of modelling. I will also very much appreciate for your corresponding recommendations in this modelling question.Thank you very much! Sincerely,Huaa Wen

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