Low Temperature Specific Heat of Nearly and Weakly Ferromagnetic Y(Co_1-xAl_x)₂

Effect of Magnetic Phase Transition on the Electronic Specific Heat Coefficient of Lu(Co1−xAlx)2

“…1 as a function of the A1 content, which increases linearly with increasing x and is in agreement with the previous report [3]. The low temperature specific heat was measured by a conventional heat-pulse method between 1.4 and 6.5 K. Details of the apparatus were described elsewhere [5].…”

“…In a previous paper [5], we have reported that the y-value of an exchange-enhanced Pauli paramagnet YCo, is 34 mJ/K2 mol, which is about five times as large as that expected from the bare density of states (DOS) at the Fermi level, 6 mJ/K2 mol [7]. Although no detailed calculation has been performed for LuCo,, we can expect nearly the same value for the DOS at the Fermi level in this compound as in YCo,, because these two compounds show quite similar magnetic properties.…”

“…Recently, we have reported the low temperature speclfic heat of Y(Co, -,A1J2 [5], where the electronic specific heat coefficient, y, is much enhanced beyond x = 0.06 and shows a broad maximum around x = 0.15. A strong upturn is observed in the C / T versus T 2 curve at low temperatures for x 2 0.09.…”

Ferromagnetic transition in the correlated4dperovskitesSrRu1−xRhYamaura1, Young2, Takayama‐Muromachi3 2004Phys. Rev. B253210View full textAdd to dashboardCite

“…52,54 Accordingly, none of the three attempts produced a good fit to the data; The curves providing the best fits are shown in Fig.8a. The curve for (3) was not shown because the parameters were unphysical.…”

Competing magnetic fluctuations inSr3Ru2O7probed by Ti doping

“…We begin by noting similarities between our results and previous studies on other itinerant metamagnets; for example, the intermetallic compound Y͑Co 1−x Al x ͒ 2 has a transition from an itinerant metamagnetic state to a weakly FM one at a doping level of x = 0.13. 22 For doping levels approaching 0.13, there is a suppression of the characteristic peak in susceptibility, 23 a strong upturn in C / T, 24 and a significant broadening of the metamagnetic transition. 25 These features have been successfully interpreted quantitatively within the self-consistent renormalized ͑SCR͒ theory of spin fluctuations as evidence for proximity to a weakly FM state.…”