| Autor: |
Tayler, Michael C. D., Ward-Williams, Jordan, Gladden, Lynn F. |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 8/12/2019, Vol. 115 Issue 7, pN.PAG-N.PAG, 5p, 1 Diagram, 5 Graphs |
| Abstrakt: |
A nuclear magnetic resonance (NMR) procedure is used to measure weak magnetic fields in the vicinity of dilute ferromagnetic and/or paramagnetic materials. By detecting 1H Larmor precession in common solvents at extremely low frequencies (<50 Hz), the magnetic field produced by remanent magnetization of the material is measured by NMR to a precision of <1 nT. In one example, the technique is used to quantify the magnitude and direction of remanent magnetization in a common aluminum alloy. In another example, a 1H NMR linewidth <1 Hz is demonstrated for liquid decane (n-C10H22) embedded inside a mesoporous silica matrix, despite the high concentration of paramagnetic cobalt sites that produce magnetic susceptibility gradients in the system. Application to systems of industrial relevance is discussed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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