Structure and magnetocaloric effect in the pseudobinary system LaFe 11 Si 2 -LaFe 11 Al 2 J. Appl. Phys. 95, 6924 (2004) We report the growth and characterization of Co 2 FeAl nanowires. Nanowires are grown using electrospinning method and the diameters range from 50 to 500 nm. These nanowires exhibit cubic crystal structure with a lattice constant of a ¼ 5:639 Å . The nanowires exhibit ferromagnetic behavior with a very high Curie temperature. The temperature dependent magnetization behavior displays an anomaly in the temperature range 600-850 K, which disappears at higher external magnetic fields. V C 2012 American Institute of Physics.[http://dx
[Co (tCo) nm/Cu 1.5 nm]50 multilayers were grown onto 15-nm Cu/polyimide buffer layers. The relationship between stress, σ, and strain, ɛ, for the [Co 1.0 nm/Cu 1.5 nm]50 multilayers has been presented. The effects of induced strain on the magnetoresistance (MR) and magnetic anisotropy have been examined. The [Co 1.0 nm/Cu 1.5 nm]50 multilayer exhibited a maximum MR ratio of 3.4% at a Co layer thickness of 1.0 nm, β of 0.1, and a strain of 1.5%. The multilayers exhibited a remarkable magnetic anisotropy with the easy axis of magnetization always lying in a plane perpendicular to the direction of the induced strain.
The magnetic response of the strongly underdoped Y 0.47 Pr 0.53 Ba 2 Cu 3 O 7−␦ was investigated. We found the presence of superconducting and magnetic orders deep into the paramagnetic state, up to 200 K, which manifest as diamagneticlike response and hysteresis, respectively. We propose that the main source of irreversibility in this T range is the softening and melting of the glassy state into a viscous liquid of entities that behave like superparamagnetic particles with antiferromagnetic cores.
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