Abstract
This paper presents the physical basis of the magnetic properties of ferromagnetic materials and shows their relationships with external geomagnetic field. It graphically processes the experimental data detected by an HMR magnetometer. Taking into account the natural geomagnetic field under the effects of steel U profiles, variations of the natural geomagnetic field in a steel structure building are indicated and the potential existence of Sick Building Syndrome (SBS) in these types of buildings is pointed out.
Highlights
Of fundamental significance from the microscopic point of view, for the magnetisation of metals is the relationship that couples the total moment of momentum J and the total magnetic moment mtot, the electronic envelope of the atom
What is called the effective magnetic moment mG is established as a projection of the vector mtot into the direction of the opposite vector J, which is sufficient to describe the basic magnetic phenomena given by the relationship between vectors mG and J
The outcome of detection of the natural geomagnetic field in the open air is a vector of magnetic induction B, which moves in our geographical latitudes around 50 mT under the effects of daily and long-time variations and non-homogeneous distribution of ferromagnetic materials in the Earth crust
Summary
This paper presents the physical basis of the magnetic properties of ferromagnetic materials and shows their relationships with external geomagnetic field.
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