Magnetometer

Financed from EU (ESRD) founds from the operation Center of Excellence in Nanoscience and Nanotechnology – CENN Nanocenter 2010 – 2013.

The magnetometer is used for basic characterizations of magnetic materials. The measured property is the dependency of the magnetic moment on the applied magnetic field. The results are usually reported as mass magnetization, moment per sample mass. Only the room-temperature magnetization curves can be obtained. The maximum applied magnetic field strength depends on the air gap between the pole caps of the electromagnets (see table). The air gap also defines the sample-access space.

Table 1. Dependence of the maximum applied field strength on the air gap.

The measured samples can be in the form of powder, liquid or bulk, e.g. film, pellet, or any kind of shape that can be attached to the film sample holder. The vibrating head, to which the sample is attached, can be rotated by 3600, enabling measurements of the magnetization at an arbitrary angle between the magnetic field and the sample. Such a measurement can provide information about the magnetic texture in the material. The range of moments that can be measured is between 10-7 emu and 103 emu, with an accuracy better than 1% at 0.2% of the full-scale range.

Responsible person: Sašo Gyergyek, +386 (0)1 477 3629, saso.gyergyek@ijs.si
Equipment location: Laboratory K803, Department for synthesis of materials, Inštitut Jožef Stefan, Jamova 39, 1000 Ljubljana
Requested level of experience: in agreement with contact person
Equipment reservation: to be discussed with responsible person
Equipment accessibility: Monday to Friday from 8:00 in 16:00 or with agreement with contact person