NMR studies of metallic tin confined within porous matrices

Journal Article · Sun Apr 01 00:00:00 EDT 2007 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.75.144101· OSTI ID:20957795

Charnaya, E V ^[1]; Tien, Cheng; Lee, M K ^[1]; Kumzerov, Yu A ^[2]

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1. Department of Physics, National Cheng Kung University, Tainan, 70101 Taiwan (China)
2. A. F. Ioffe Physico-Technical Institute, RAS, St. Petersburg 194021 (Russian Federation)

{sup 119}Sn NMR studies were carried out for metallic tin confined within synthetic opal and porous glass. Tin was embedded into nanoporous matrices in the melted state under pressure. The Knight shift for liquid confined tin was found to decrease with decreasing pore size. Correlations between NMR line shapes, Knight shift, and pore filling were observed. The melting and freezing phase transitions of tin under confinement were studied through temperature dependences of NMR signals upon warming and cooling. Melting of tin within the opal matrix agreed well with the liquid skin model suggested for small isolated particles. The influence of the pore filling on the melting process was shown.

• OSTI ID: 20957795
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 75, Issue 14; Other Information: DOI: 10.1103/PhysRevB.75.144101; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONFINEMENT
COOLING
FREEZING
GLASS
KNIGHT SHIFT
LIQUID METALS
MELTING
NUCLEAR MAGNETIC RESONANCE
OPALS
POROUS MATERIALS
TEMPERATURE DEPENDENCE
TIN
TIN 119