The Magnetic Susceptibility of the Transition Elements

Abstract

The available data on the temperature dependence of the paramagnetic susceptibility of the transition elements are reviewed. A theoretical treatment according to the band theory of solids is developed explicitly by means of a simple approximation to the Fermi function. Each term in the resulting theoretical formula may be directly and graphically interpreted in terms of the geometry of the density-of-states curve, allowing a simple and intuitive analysis of the susceptibility variation at any temperature. The empirical data on the temperature coefficient of susceptibility, on the absolute magnitude of the susceptibility, and on the specific heats of the transition elements are analyzed to suggest probable alterations in the available theoretical density-of-states curves.

Role of dynamic exchange coupling in magnetic relaxations of metallic multilayer films (invited)

“…It should be noted that 1/ sf in metals is proportional to the square of the spin orbit interaction. 17,18 Using P from Kriesman and Callen 19 and sf from the spin diffusion length in current perpendicular to plane giant magnetoresonance measurements one obtains for the bulk Gilbert damping Gϭ5 ϫ10 6 and 1ϫ10 8 s Ϫ1 for Co and permalloy ͑Py͒, respectively, see the details in Ref. 18.…”

Effects of the nanocrystalline state in solids

“…£ ÐËÊÍÑÕÇÏÒÇÓÂÕÖÓÐÑÌ ÑÃÎÂÔÕË ÒÓËÃÎËÊËÕÇÎßÐÑ AEÑ 50 K [199] ÏÂÅÐËÕÐÂâ ÄÑÔÒÓËËÏÚËÄÑÔÕß Pd ÄÑÊÓÂÔÕÂÇÕ ÒÓÑÒÑÓÙËÑÐÂÎßÐÑ ÍÄÂAEÓÂÕÖ ÕÇÏÒÇÓÂÕÖÓÞ Ë ÑÒËÔÞÄÂÇÕÔâ ÑÃÞÚÐÑÌ AEÎâ ×ÇÓÏËÑÐÑÄ ÕÇÏÒÇÓÂÕÖÓÐÑÌ ÊÂÄËÔËÏÑÔÕßá ±ÂÖÎË…”

Role of Spin Momentum Current in Magnetic Non-Local Damping of Ultrathin Film Structures

“…It should be noted that 1l/r 8 in metals is proportional to the square of the spin orbit interaction [16,17]. Using Xp from Kriesman and Callen [18] and -rf from the spin diffusion length in Current Perpendicular to Plane (CPP) GMR measurements one obtains for the bulk Gilbert damping G = 5x10 6 s-1 and 1 x10Ss-1 for Co and permalloy (Py), respectively, see the details in [17]. This contribution is small in Co but it explains the intrinsic damping in Py.…”