NMR Study of MnSi under Pressure
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The magnetic phase diagram T<SUB>c</SUB> (P) of the weak itinerant helimagnetic compound MnSi is reviewed upon a Nuclear Magnetic Resonance (NMR) experiment. We present a systematic study on the evolution of the NMR spin echo signal at T=1. 4 K of the non-magnetic silicone sites, <SUP>29</SUP>Si, up to 17. 8 kbar. The pressure effect is interpreted as a weak variation of the local electronic spin polarization and the coexistence of magnetic and non magnetic Mn atoms under pressure. From the volume dependence of f<SUB>o</SUB> (P), we show notably that a local magnetic order remains above the critical pressure of P<SUB>c</SUB>=14. 8 kbar.
- The Review of High Pressure Science and Technology
The Review of High Pressure Science and Technology 7, 487-489, 1998
The Japan Society of High Pressure Science and Technology