I will try to do some experiments on metal nanostructures like ZnO sheets on the top of this I want to coat some magnetic nanoparticles for this I want known instrumental details.
You may use SQUID-VSM or MPMS-XL for magnetization measurement. These systems have sensitivity of 10-8 emu.
It depends on what kind of measurements you want to do. Squid or VSM will give you data from the bulk of the nanomaterials together with that of the substrate (if there is any). However, if you need information from the surface of the nano-particles only, then you should go for magneto-optical Kerr effect (MOKE) measurements. In this case there is no size limitation. For SQUID or VSM, the sample size has to be rather small, generally 5x5 mm2 or smaller.
MFM, magnetic force microscopy is also one option, providing that the measurements at room temperature are sufficient.
Dear Emil Babic,by using MFM we can measures magnetic moment of Ferro magnetic materials like Fe3O4 nano particles but no para magnetic compounds.
With SQUID or VSM you will get the magnetic moment of the whole sample. The shape of the loops will be different if the field is applied in the plane of the substrate or perpendicular to it, due to dipolar interactions between the particles. If you want to have the average moment per nanoparticle, you can take several AFM images to get a good statistics and extract the areal density of NPs.
- Badges
- Science topic
- Similar topics
- Chemistry
- Nanotechnology
- Nano