Comments on: 如何使用 COMSOL Multiphysics® 模拟霍尔效应传感器 - //www.denkrieger.com/blogs/how-to-model-a-hall-effect-sensor-with-comsol-multiphysics 发布博客 Fri, 03 Jan 2025 05:16:57 +0000 hourly 1 https://wordpress.org/?v=5.7 By: hao huang //www.denkrieger.com/blogs/how-to-model-a-hall-effect-sensor-with-comsol-multiphysics/#comment-39003 Fri, 03 Jan 2025 05:16:57 +0000 http://cn.staging.comsol.com/blogs?p=289041#comment-39003 In reply to 建国 习.

您好

感谢您的评论。

涉及到具体的仿真问题可以联系 COMSOL 的技术支持团队：
在线支持中心：www.denkrieger.com/support
Email: support@comsol.com
谢谢！

]]> By: 建国 习 //www.denkrieger.com/blogs/how-to-model-a-hall-effect-sensor-with-comsol-multiphysics/#comment-38683 Fri, 27 Dec 2024 03:16:23 +0000 http://cn.staging.comsol.com/blogs?p=289041#comment-38683 Hi Dr. Frei
I am an engineer in TMR sensor, and recently I create a model to simulate the TMR sensor using bottom electrode，magentoresistance junctions, top electrode, isolation layer, Cu layer, Cr layer, and permalloy layer. When running this simulation under ec modulus and cir modulus, I encounter one problem like that:
Feature: Steady-state solver 1 (sol1/s1)
Solution cannot be found for the initial parameters.

Current
Singular matrix.

For mesh instance 0, there is 1 empty equation (empty row in the matrix for variable comp1.ec.term5.V0_ode).
Located at coordinates: (0,0,0), …
For mesh instance 0, there is 1 empty equation (empty row in the matrix for variable comp1.ec.term8.V0_ode).
Located at coordinates: (0,0,0), …
Similar to degrees of freedom (empty columns in the matrix).

In Current:
The returned solution did not converge.
Not all parameter steps were returned.
Could you help me to solve this problem? If you need, I can show you this model(.mph)?

]]> By: Qihang Lin //www.denkrieger.com/blogs/how-to-model-a-hall-effect-sensor-with-comsol-multiphysics/#comment-26793 Fri, 08 Dec 2023 01:10:10 +0000 http://cn.staging.comsol.com/blogs?p=289041#comment-26793 In reply to Maokang Shen.

这种存在材料不同的情况我们建议您再几何上画出两层，然后直接在材料中进行设置。

]]> By: Maokang Shen //www.denkrieger.com/blogs/how-to-model-a-hall-effect-sensor-with-comsol-multiphysics/#comment-26623 Tue, 05 Dec 2023 02:39:41 +0000 http://cn.staging.comsol.com/blogs?p=289041#comment-26623 Walter Frei 博士，您好！我想请教下，如果我的模型有两层，其中一层是铁磁金属，另一层是普通金属，模拟反常霍尔效应，怎么给每层加不同的本构关系（电阻率）啊？我目前只能给两层加同一个电阻率。期待您的回复！

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