Uniaxial stress induced symmetry breaking for muon sites in Fe
Abstract
Uniaxial stress was used on Fe single crystals to induce muon precession frequency shifts. The frequency shift for a nominally pure Fe sample at 302K was -0.34 + or - .023 MHz per 100 microstrain along the 100 magnetization axis. This corresponds to a change of magnetic field at the muon of 25.1 + to 1.6G/100 magnetic moment. For an Fe (3wt%Si) single crystal the shifts were -0.348 + or - .008 MHz/100 magnetic moment. The agreement between the shifts for Fe and Fe(3wt%Si) shows the effect to be intrinsic to iron and not strongly impurity sensitive. These shifts and their temperature dependence (1/T) are dominated by the effect of strain inducted population shifts between crystallographically equivalent, but mgnetically inequivalent sites. Their magnitudes are in good agreement ith previous theoretical predictions and by previous extrapolation from calculations on Nb and V especially if both 4T(0) and 1T sites contribute comparably.
- Publication:
-
In Virginia State Univ. Activities of the Solid State Physics Research Inst. 33 p (SEE N85-28818 17-76
- Pub Date:
- December 1984
- Bibcode:
- 1984assp.rept.....K
- Keywords:
-
- Axial Stress;
- Broken Symmetry;
- Iron;
- Muons;
- Frequency Shift;
- Magnetic Fields;
- Single Crystals;
- Temperature Dependence;
- Solid-State Physics