Effect of erbium on magnetization of Ho?Dy alloys

Elyutin, O. P.; Pshechenkova, G.V.; Taratynov, V. P.; Shul'te, L. A.

doi:10.1007/bf00679739

Cited by 4 publications

(1 citation statement)

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“…A comprehensive overview on binary inter-heavy-RE alloys was given by Bozorth, 336 giving information on the magnetic order, Curie (or N eel) points and magnetic moments. One report points out the slight increase of M S for bulk Ho-Sm alloys with an atomic Sm content of less than 338 and Ho-Er 339 suggests tailoring magnetic properties such as softness, yet again no moment gain was achieved 340 and the magnetic order in Ho-Er alloys, proposed to be FM, was shown to be rather complex by Cowley et al 341 A wide variety of RE-RE superlattices has been studied for their magnetic transition and coupling behaviour. 342,343 Although mostly not in the focus of those studies, their saturation magnetisation measurements show no improvement of the laminate over pure bulk RE saturation magnetisation.…”

Section: Inter-re Alloys and Laminatesmentioning

confidence: 99%

A review of high magnetic moment thin films for microscale and nanotechnology applications

et al. 2016

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The creation of large magnetic fields is a necessary component in many technologies, ranging from magnetic resonance imaging, electric motors and generators, and magnetic hard disk drives in information storage. This is typically done by inserting a ferromagnetic pole piece with a large magnetisation density M S in a solenoid. In addition to large M S , it is usually required or desired that the ferromagnet is magnetically soft and has a Curie temperature well above the operating temperature of the device. A variety of ferromagnetic materials are currently in use, ranging from FeCo alloys in, for example, hard disk drives, to rare earth metals operating at cryogenic temperatures in superconducting solenoids. These latter can exceed the limit on M S for transition metal alloys given by the Slater-Pauling curve. This article reviews different materials and concepts in use or proposed for technological applications that require a large M S , with an emphasis on nanoscale material systems, such as thin and ultra-thin films. Attention is also paid to other requirements or properties, such as the Curie temperature and magnetic softness. In a final summary, we evaluate the actual applicability of the discussed materials for use as pole tips in electromagnets, in particular, in nanoscale magnetic hard disk drive read-write heads; the technological advancement of the latter has been a very strong driving force in the development of the field of nanomagnetism.

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