Physical properties of (Mn 0.85 Fe 0.15) Si along the critical trajectory

Abstract

We report results of studying the magnetization, specific heat and thermal expansion of a single crystal with nominal composition Mn 0.85 Fe 0.15 Si . We found no thermodynamic evidences in favor a second order phase transition in the 15 % Fe substituted MnSi. The trajectory corresponding to the present composition of (MnFe)Si is a critical one, i.e. approaching quantum critical point at lowering temperature, but some properties may feel the cloud of helical fluctuations bordering the phase transition line.

6 pages, 11 figures

References in corpus (4)

• Ultrasonic studies of the magnetic phase transition in MnSi
• Peculiar behavior of the electrical resistivity of MnSi at the ferromagnetic phase transition
• Magnetization and ac susceptibility study of the cubic chiral magnet Mn${}_{1-x}$Fe${}_x$Si
• Evolution of helimagnetic correlations in Mn${}_{1-x}$Fe${}_x$Si with doping: a small-angle neutron scattering study

Cited by in corpus (3)

• Evolution of Helimagnetic Correlations when approaching the Quantum Critical Point of Mn${}_{1-x}$Fe${}_x$Si
• Physical properties of (Mn,Co)Si
• Physical properties of MnSi at extreme doping with Co: Quantum criticality