TWO-DIMENSIONAL FERROMAGNETIC ORDERING IN A METAL–ORGANIC MULTILAYER STRUCTURE
| Autor: | Robert M. Dalgliesh, M. K. Mukhopadhyay, Milan K. Sanyal, Sean Langridge |
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| Rok vydání: | 2005 |
| Předmět: |
Materials science
Condensed matter physics Bioengineering Neutron scattering Condensed Matter Physics Computer Science Applications Magnetic field Dipole Ferromagnetism Condensed Matter::Strongly Correlated Electrons General Materials Science Neutron Electrical and Electronic Engineering Anisotropy Spontaneous magnetization Biotechnology Spin-½ |
| Zdroj: | International Journal of Nanoscience. :831-837 |
| ISSN: | 1793-5350 0219-581X |
| DOI: | 10.1142/s0219581x05003772 |
| Popis: | We demonstrate, using spin polarized neutron reflectivity measurements, that one can form a large stack of magnetically decoupled spin-membranes of Gadolinium ions and reduce the effect of the substrate substantially to study short-range two-dimensional (2D) ferromagnetic ordering. No spontaneous magnetization was observed in these membranes as the magnetic field was applied along an in-plane direction. The results are consistent with theoretical predictions of 2D in-plane spin systems having strong interplay of exchange, magneto-crystalline anisotropy and dipolar interactions. These metal–organic multilayer films will enable us to verify various theoretical predictions regarding spin-fluctuations in 2D systems using conventional magnetic measurements and neutron scattering studies. |
| Databáze: | OpenAIRE |
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