Structural and magnetic phases of manganese alloys.
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Structural and magnetic phases of manganese alloys.

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Published by University of Salford in Salford .
Written in English


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MSc thesis, Physics.

ID Numbers
Open LibraryOL20905841M

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The structural and magnetic properties of well characterized alloys have been studied in the range from 40 to 66 at. % Pd. The CsCl type, cubic PdMn phase is stable only at high temperatures, homogeneous between approximately 40 and approximately 50 at. MSM alloys are ferromagnetic materials that can produce motion and forces under moderate magnetic fields. Typically, MSMAs are alloys of Nickel, Manganese and Gallium (Ni-Mn-Ga). A magnetically induced deformation of about % was presented in by Dr. Kari Ullakko and co-workers at MIT. DSC measurements indicated that as the atomic per cent of manganese increases, the amount of Mn Bi phase increases in the as-spun ribbons. The resulting magnetic properties and structural changes occurring with ageing and annealing (with and without an applied magnetic field) are by: 4.   The structural and magnetic phase diagrams of MnFe Ni Si 1− x Ge x alloys (0 ≤ x ≤ 1) are explored using powder X-ray diffraction, magnetic and calorimetric measurements. At room temperature, the crystal structure evolves from the orthorhombic TiNiSi-type to the hexagonal Ni 2 In-type with the increase in Ge. A magneto-structural coupling leading to a first-order ferromagnetic.

Heusler compounds are magnetic intermetallics with face-centered cubic crystal structure and a composition of XYZ (half-Heuslers) or X 2 YZ (full-Heuslers), where X and Y are transition metals and Z is in the of these compounds exhibit properties relevant to spintronics, such as magnetoresistance, variations of the Hall effect, ferro-, antiferro-, and ferrimagnetism, half-and.   Investigations of the magnetic properties in the ordered CuAu ‐ I ‐ type manganese alloys are reviewed. The formation of the ordered phase and the possible magnetic structures are discussed. New experimental results for the Mn‐Ni, Mn‐Pd, and Mn‐Pt systems are reported.   X-Ray diffraction patterns of cobalt-nickel substituted manganese spinel ferrites are shown in Fig. the peaks obtained from the XRD patterns are the characteristic peaks of spinel structure with privileged orientation along (1 1 1), (2 2 0), (3 . Face-centered tetragonal (fct) η-phase manganese nitride films have been grown on magnesium oxide () substrates by molecular-beam epitaxy. For growth conditions described here, reflection high energy electron diffraction and neutron scattering show primarily two types of domains rotated by 90° to each other with their c axes in the surface.

  1. Introduction. High entropy alloys (HEAs) are simple solid solution alloys consisting of several elements (often five or more) in equal or near equiatomic amounts [,, ].HEAs appear in one or two basic crystal structures, i.e., body centred cubic (BCC) and/or face centred cubic (FCC) structure as a result of a high entropy effect due to the mutual solubility of the constituent elements. Figure 2: Phase diagram of La 1−x Ca x MnO 3 showing magnetic and structural phase boundaries (S.-W. Cheong, personal communication). Figure 3: Measured and calculated resistivity of La Ca 0. The synthesis, structural characterization, and magnetic properties of crystalline manganese oxide nanoparticles are presented. The procedure is based on the reaction of benzyl alcohol with the two precursors: potassium permanganate KMnO4 and manganese(II) acetylacetonate Mn(acac)2. Depending on the precursor used, the composition of the final product can be varied in such a way .   Books. Publishing Support. Login. The complex structural and magnetic phase diagram of iron makes it challenging to determine the effect of impurities on the microstructure of alloys as well as its electronic structure, which is critical for the fundamental understanding of the observed macroscopic properties. manganese in bcc Fe alloys.