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|Type:||Artigo de evento|
|Title:||Magnetic Properties Of Bimetallic Aupdo And Aupd Nanoparticles Confined In Ordered Mesoporous Silica Sba-15 Channels|
|Abstract:||In this work we report on the magnetic properties of the composites bimetallic AuPdO and AuPd nanoparticles (AuPdO- and AuPd-NPs) supported on mesoporous silica SBA-15 channels (AuPdO- and AuPd-NPs/SBA-15) by means of Electron Spin Resonance and Magnetization experiments. A single magnetic resonance line was observed from 300 K down to 50 K. The normalized integrated resonance intensity remains nearly constant in the entire range of temperature. Magnetization measurements at 300 K were able to detect magnetic loops due to the AuPdO and AuPd-NPs, in spite of the small amount of NPs (~ 1.5 % wt.) present in our samples and the relatively large intrinsic magnetization of the mesoporous silica SBA-15 supports. These results characterize the observed resonance as a ferromagnetic resonance (FMR).|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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