We report discovery of collinear-magnetism-driven ferroelectricity in the Ising chain magnet Ca3Co2-xMn(x)O6 (x approximately 0.96). Neutron diffraction shows that Co2+ and Mn4+ ions alternating along the chains exhibit an up-up-down-down ( upward arrow upward arrow downward arrow downward arrow) magnetic order. The ferroelectricity results from the inversion symmetry breaking in the upward arr...

Background: One of the most important phenotypic modifying factors for thalassemia is the presence of Xmn1 polymorphism. This retrospective study was performed to investigate the overall prevalence of Xmn1 polymorphism among Iranian β-thalassemia patients with homozygote IVSII-1mutation and to assess the relationship between Xmn1 polymorphism with patients’ hemoglobin levels and the response to...

Zinc is considered to be a suitable element for the preparation of bioresorbable materials that can gradually degrade in human body without production toxic compounds and undesirable hydrogen gas. Zn characterized by much lower corrosion rate saline compared magnesium-zinc its alloys. Therefore, this work we investigate Zn-0.4Mg-0.4Ca-xMn alloys with 0, 0.2, 0.4, 0.6 0.8 1.1 wt. % Mn. The eleme...

Lithium-excess and nano-sized Li2+xMn₁-x/2TiO₄ (x = 0, 0.2, 0.4) cathode materials were synthesized via a sol-gel method. The X-ray diffraction (XRD) experiments indicate that the obtained main phases of Li2.0MnTiO₄ and the lithium-excess materials are monoclinic and cubic, respectively. The scanning electron microscope (SEM) images show that the as-prepared particles are well distributed and t...

First-principle calculations are used to investigate the intrinsic magnetic properties of intermetallic alloys of the type XMn, where X is a 4d or 5d element and M is Fe or Co. Emphasis is on the hexagonal C14 Laves-phase 1:2 and 1:5 alloys, the latter crystallizing in the CaCu5 structure. These series are of interest in permanent magnetism from fundamental and practical viewpoints, respectivel...