Magnetic Ordering in Gold Nanoclusters.

ABSTRACT: Several research groups have observed magnetism in monolayer-protected gold cluster samples, but the results were often contradictory, and thus, a clear understanding of this phenomenon is still missing. We used Au₂₅(SCH₂CH₂Ph)₁₈ ⁰, which is a paramagnetic cluster that can be prepared with atomic precision and whose structure is known precisely. Previous magnetometry studies only detected paramagnetism. We used samples representing a range of crystallographic orders and studied their magnetic behaviors using electron paramagnetic resonance (EPR). As a film, Au₂₅(SCH₂CH₂Ph)₁₈ ⁰ exhibits a paramagnetic behavior, but at low temperature, ferromagnetic interactions are detectable. One o

SUBMITTER: Agrachev M 

PROVIDER: S-EPMC6640951 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature