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Published on: March 24, 2019
Spin-disorder intervened avoidance of quantum criticality in B20 cubic Mn1-xVxSi
Parul Khandelwal1, S Shanmukharao Samatham2, P D Babu3
1Magnetic Materials Laboratory, Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
Abstract:
The effect of negative chemical pressure with the substitution of transition metal V in an itinerant helimagnetically ordered MnSi, Mn1-xVxSi withx= 0-0.1, is explored using dc and ac-susceptibilities. With increasingx, the manifestations are unaffected crystal structure with increasing unit cell volume, suppression of long-range magnetic order, weakening of itinerant character and reduced spin-cooperative phenomenon. The emergence of spin-glass behaviour forx⩾0.1intervenes in the occurrence of quantum phase transition. The constructed concentration-temperaturex-Tphase diagram illustrates the substitution-driven changes in the magnetism of MnSi. Further, the study suggests that the presence of a precursor state can favour the formation of spin-textures in magnetically ordered compositions0
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