Unusually large magnetic moments in the normal state and superconducting state of Sn nanoparticles
Source abstract
Abstract
We report on the observations of spontaneous magnetic moments in the normal as well as in the superconducting states of a 9 nm Sn nanoparticle assembly, through X-ray diffraction, magnetization, ac magnetic susceptibility, and neutron diffraction measurements. The saturation magnetization reaches an unexpectedly large value of 1.04 emu/g at 5 K, with a temperature profile that can be described by Bloch’s law with an exponent of b = 1.8. A magnetic moment of 〈μ Z〉 = 0.38 μ B develops after cooling from 260 to 4 K. Superconductivity develops below T C = 3.98 K, which is 7 % higher than the T C = 3.72 K of bulk Sn. Surprisingly, an addition magnetic moment of 〈μ Z〉 = 0.05 μ B develops upon entering the superconducting state.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Surface and Thin Film Phenomena · Physics of Superconductivity and Magnetism · Quantum and electron transport phenomena
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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