Showing papers in "Journal of Magnetism and Magnetic Materials in 1980"

TL;DR: Magnetotactic bacteria that orient and swim in a preferred direction in the geomagnetic field contain sufficient single domain magnetite to constitute a biomagnetic compass as mentioned in this paper, which can be used as a compass.

TL;DR: In this paper, a complete phenomenological analysis is given for the case of uniaxial anisotropy in terms of K1, K2, K3, K4, K5, K6, K7, K8, K9, K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K20, K21, K22, K23, K24, K25, K26, K27, K28, K29, K30,

TL;DR: In this paper, a number of the physical and metallurgical aspects are discussed, particularly those which influence the properties of the technically important nickel-iron alloys, such as the composition of the alloy, isotropic and anisotropic ordering processes, the microstructure, textures, non-magnetic inclusions and precipitation processes.

TL;DR: The Lifshitz multicritical point (LP) divides the phase diagram of a magnetic system into paramagnetic, uniform (ferro- or antiferromagnetic) and modulated (spiral or helicoidal) phases, which coexist at the LP.

TL;DR: In this article, a spin-density functional theory is used to calculate the electronic structure of chromium whose ground state is assumed to be paramagnetic (P-Cr) (not spin polarized), ferromagnetic (F-Cr), and antiferromagnetic(AF-Cr).

TL;DR: In this paper, the authors studied the room temperature dependence of the stress-induced magnetic anisotropy in Co 73 Mo 2 Si 15 B 10 (λ s 0.89 Fe 0.11 ) 72 Mo 3 Si 15B 10(λ > 0) metallic glass ribbons and concluded that transient creep and steady-state creep at the elevated temperature give rise to compressive and tensile stresses, respectively, in the expression for the magnetoelastic coupling energy at room temperature.

TL;DR: In this paper, the lattice parameter of the Fe-films fitted to that of the CuAu-substrate, resulting in an expansion of Fe-lattice with increasing Au-content of the substrate, was investigated.

TL;DR: In this paper, the electronic energy band structure of the intermetallic compound MnSi, a typical itinerant electron magnet, is calculated by a self-consistent APW method.

TL;DR: In this paper, X-ray neutron diffraction and magnetization measurements on a series of perovskites, Pr1−xCaxMnO3, with 0 ⩽ χ⩽ 0.5 were reported.

TL;DR: In this paper, the authors reviewed recent theoretical developments in the study of the electronic structure and magnetic properties of itinerant magnets and examined the energetics of different local moment configurations within a parametrized tight-binding framework.

TL;DR: In this paper, the susceptibility, magnetization, electrical resistivity and thermopower of Y 4 Co 3 have been measured and a Curie temperature of (8±1) K has been observed.

TL;DR: In this paper, the applicability of Ni-Zn dense ferrites to audio and video heads is discussed, and their properties are given and illustrated in figures, as well as limitations.

TL;DR: A review of recent theoretical work on the approach to, and the nature of, the paramagnetic state in ferromagnetic transition metals is given in this paper, where a new justification is given for a previous phenomenological model of metals such as bcc Fe with stable local moments.

TL;DR: In this paper, a tetragonal distortion of the fcc lattice of γ-iron in a copper matrix has been investigated by X-ray diffraction in the temperature range from 300 to 6 K.

TL;DR: In this article, the resurgence of magnetism and its localization in terms of the band structure of the alloy was discussed, and the resurgence was not due to the yttrium 4d electrons but to the nickel 3d electrons, the spatial distribution of which is analogous to that observed in nickel metal.

TL;DR: Magnetic and electrical properties and thermal expansion of Fe-Pd Invar alloys were measured, especially at low temperatures, in this article, and the results were compared with those of FeNi Invar Alloy alloys in a standpoint of the two-spin states model.

TL;DR: Ferromagnetic resonance and antiresonance experiments have been performed on (100) planes of iron whiskers in order to determine the value of surface anisotropy Ks as discussed by the authors.

TL;DR: In this paper, the effect of the charge density fluctuation was taken into account within the saddle point approximation, and the results of numerical calculations for various model densities of states including those for bcc and fcc d-metals were presented.

TL;DR: In this paper, the electron spin resonance frequency in the field cooled spin-glass state is best described by a linear relation ω = γH 0 + ω a where ω is a measure of the macroscopic anisotropy field present.

TL;DR: In this article, low temperature heat capacities and electrical resistivities of (Ce, La)In 3 and Ce(In, Sn) 3 are reported. And it is concluded that Ce with 12 In neighbours displays a Kondo effect modified by CEF effects, which might be suppressed by magnetic interactions.

TL;DR: In this paper, the magnetic after effect spectra and their annealing properties were measured in the temperature range between 4.2 and 520 K. In the case of the Ni-Fe-based alloys, a relaxation maximum around 400 K was observed whereas in the low temperature range an almost temperature independent relaxation background appeared.

TL;DR: In this article, the magnetization vs temperature relation for amorphous alloys Fe 100-x B x, Fe 84 B 16-x C x, Fe 80 B 20-x Si x, etc.

TL;DR: In this article, complete dissolution temperatures of precipitated AlN and MnS particles in 3% silicon-steel were studied, and their solubility products were determined; log[(pct Al)(pct N)] = −10 062/T + 2.72, log[pct Mn/(pct S] = −14 855/ T + 6.82]

TL;DR: In this article, neutron diffraction and specific heat measurements on the layered compounds BaNi2(PO4)2 and BaNi 2(AsO4) 2 are reported, which order antiferromagnetically below 24.05 and 18.65 K, respectively.

TL;DR: In this article, a first analysis of these peculiar magnetic behaviors is given starting from the crystalline electric-field level scheme and may indicate the possible existence of exchange interactions other than the isotropic bilinear ones.

TL;DR: In this paper, the weak field ac susceptibility and resistivity of Fe 2 P single crystals were measured as functions of temperature from 4.2 to 300 K and as function of hydrostatic pressures up to 20 kbar.

TL;DR: The initial susceptibility of Fe 3 O 4 particles in a diester carrier gives an anisotropy constant K = 4.7 K for the diester and water based fluids determined from the temperature decay of the remanence is 2.7 × 10 5 erg cm -3 and 1.5 × 10 five erg cm −3 as mentioned in this paper.

TL;DR: In this paper, the authors review past research on ferrite materials and important characteristics of wave propagation at millimeter wavelengths, and suggest experimental programs and new ferrite material which complement the early works of the nineteen-fifties and sixties for the purpose of improving present commercial devices and developing new Ferrite devices.

TL;DR: In this paper, a series of polycrystalline iron-deficient Ni-ferrite samples were analyzed and a well defined dispersion of the complex conductivity σ ∗ = σ′ + jσ″ is observed at various temperatures.

TL;DR: In this article, Ferromagnetic domains in Fe-3% Si were observed by neutron phase-contrast imaging, using a perfect crystal Bragg-diffraction interferometer and unpolarized neutrons.