This paper describes the two-dimensional numerical solution of the sys
tem of partial differential equations governing the carrier and heat t
ransport in a semiconductor structure in the presence of a magnetic fi
eld. The model is based on a thermodynamic approach [1-3] and it was i
mplemented in the thermomagnetic module of 2D process/device simulator
TRENDY [4,5]. The influence of temperature gradients on the response
of a magnetic field sensor is presented in the paper.