Negative thermal expansion and itinerant ferromagnetism in Mn1.4Fe3.6Si3

  title={Negative thermal expansion and itinerant ferromagnetism in Mn1.4Fe3.6Si3},
  author={Vikram Singh and R. Nath},
  journal={Journal of Applied Physics},
We report the thermal expansion, critical behavior, magnetocaloric effect (MCE), and magnetoresistance (MR) on the polycrystalline Mn1.4Fe3.6Si3 compound around the ferromagnetic transition. A large negative volume thermal expansion (αV ∼ −20 × 10 −6 K) is observed across the transition temperature with a strong anisotropic variation of lattice parameters in the ab-plane. The anisotropic magnetoelasticity arises from the competition between magnetic ordering and structural deformation which… Expand

Figures and Tables from this paper


Magnetocaloric effect and magnetoresistance correlation in Ge-doped Mn2Sb
Magnetocaloric effect (MCE) and magnetoresistance (MR) in Ge-doped Mn2Sb systems with near-room-temperature, first-order antiferromagnetic (AFM) to ferrimagnetic (FRI) transitions have been studied.Expand
Influence of negative lattice expansion and metamagnetic transition on magnetic entropy change in the compound LaFe11.4Si1.6
Magnetization of the compound LaFe11.4Si1.6 with the cubic NaZn13-type structure was measured as functions of temperature and magnetic field around its Curie temperature TC of ∼208 K. It is foundExpand
Negative thermal expansion in (Sc,Ti)Fe2 induced by an unconventional magnetovolume effect
Negative thermal expansion (NTE) has been found in some magnetic functional materials due to the magnetovolume effect (MVE), in which an order-to-disorder magnetic transition occurs. Here, we reportExpand
Critical behavior and magnetocaloric effect across the magnetic transition in Mn1+xFe4−xSi3
The measurements show no thermal hysteresis across the magnetic transition for the parent compound which is in contrast with the previous report and corroborate the second order nature of the transition. Expand
The similar dependence of the magnetocaloric effect and magnetoresistance in TmCu and TmAg compounds and its implications
We report the results of resistivity (ρ), magnetoresistance (MR) and in-field heat capacity (C) measurements on TmCu and TmAg compounds. Despite the different nature of magnetic transitions -Expand
A study of magnetocaloric effect in PrCo2Si2 to understand contributions to magnetoresistance
Abstract The results of electrical resistivity and heat capacity measurements in the presence of an external magnetic field on the compounds PrCo2Si2 and Pr0.8La0.2Co2Si2 are reported. TheExpand
Negative Thermal Expansion of Ni-Doped MnCoGe at Room-Temperature Magnetic Tuning.
A new route to achieve magnetic manipulation of a giant NTE in (Mn0.95Ni0.05)CoGe via strong magnetostructural (MS) coupling around room temperature (∼275 to ∼345 K), realized through the weak bonding between the nonmagnetic CoGe-network and the magnetic Mn-sublattice. Expand
Structure, Magnetism, and the Magnetocaloric Effect of MnFe4Si3 Single Crystals and Powder Samples
Magnetic and structural properties of high quality magnetocaloric MnFe4Si3 single crystals are investigated macroscopically and on an atomic scale. Refinements of combined neutron and X-ray singleExpand
Zero Thermal Expansion in Magnetic and Metallic Tb(Co,Fe)2 Intermetallic Compounds.
The intriguing ZTE property of Tb(Co,Fe)2 is formed due to the balance between the negative contribution from the Tb magnetic moment induced spontaneous magnetostriction and the positive role from the normal lattice expansion. Expand
Elasticity and magnetocaloric effect in MnFe4Si3
The room temperature magnetocaloric material MnFe4Si3 was investigated with nuclear inelastic scattering (NIS) and resonant ultrasound spectroscopy (RUS) at different temperatures and appliedExpand