Investigation of weak itinerant ferromagnetism and critical behavior of Y${}_2$Ni${}_7$

Abstract

The weak itinerant ferromagnetic behavior of Y${}_2$Ni${}_7$ is investigated through magnetic, transport and calorimetric measurements. The low value of saturation moment, large Rhodes-Wohlfarth ratio, large value of the linear term in heat capacity and Fermi liquid like resistivity behavior with enhanced electron-electron scattering contribution establish firmly the weak itinerant ferromagetic nature of the sample. The critical exponents associated with the paramagnetic to ferromagnetic transition are also investigated from magnetization isotherms using modified Arrott plot, Kouvel-Fisher plot and critical isotherm technique. The more accurate Kouvel-Fisher plot provides the critical exponents to be $\beta$ = 0.306, $\gamma$ = 1.401 and $\delta$ = 5.578. These values are markedly different from the mean field values and correspond closely to the two dimensional Ising spin system with long range spin spin interaction.

Physical Review B 84, 184414 (2011)

References in corpus (6)

• Fermi-liquid instabilities at magnetic quantum phase transitions
• Magnetic-Field Induced Quantum Critical Point in YbRh${}_2$Si${}_2$
• Quantum Phase Transitions in the Itinerant Ferromagnet ZrZn${}_2$
• Ferromagnetic Properties of ZrZn${}_2$
• Weak itinerant ferromagnetism in Heusler type Fe2VAl0.95
• Itinerant Ferromagnetism and Quantum Criticality in Sc${}_3$In

Cited by in corpus (13)

• Single crystal growth from light, volatile, and reactive materials using lithium and calcium flux
• Frustrated magnetism in tetragonal CoSe, analogue to superconducting FeSe
• Coexisting structural disorder and robust spin-polarization in half-metallic FeMnVAl
• Critical behaviors of half-metallic ferromagnet Co3Sn2S2
• Critical behavior of magnetization in URhAl:Quasi-two-dimensional Ising system with long-range interactions
• Small moment antiferromagnetic ordering in single crystalline La2Ni7
• Negative thermal expansion and itinerant ferromagnetism in Mn${}_{1.4}$Fe${}_{3.6}$Si${}_3$
• Relation between the weak itinerant magnetism in $A_2$Ni${}_7$ compounds ($A$ = Y, La) and their stacked crystal structures
• Electronic structure and weak itinerant magnetism in metallic Y2Ni7
• Amorphous ferromagnetism and re-entrant magnetic glassiness in Sm${}_2$Mo${}_2$O${}_7$: new insights into the electronic phase diagram of pyrochlore molybdates
• Correlations between stacked structures and weak itinerant magnetic properties of La${}_{2-x}$ Y${}_x$ Ni${}_7$ compounds
• Restructuring disorder: Transformation from the antiferromagnetic order in Fe2VSi to the ferromagnetic state in FeRuVSi by substitution of a non-magnetic element
• Low magnetic moment and unconventional magneto-transport in half-Heusler alloy CoVGe