Structural and Magnetic Properties of Mechanically Alloyed Fe-Co Powders

The Fe-Co alloys are well known as ferromagnetic materials exhibiting high values of saturation magnetization, Curie temperature and magnetostriction. In powder form they are commonly used in the magnetic recording media. In this paper the structural and magnetic properties of a series of Fe-Co alloy powders prepared by mechanical alloying are presented. The Fe-Co powders (with 30, 45, 50 and 60 wt. % of Co) were prepared by mechanical alloying of high purity powder elements mixture in a planetary ball mill (Retsch PM 4000). The milling of all samples was performed in argon atmosphere with the ball-to-powder weight ratio of 15:1 and the speed of 180 rpm for 30 hours. The X-ray diffraction investigations show, that the alloying of fcc-Co into bcc-alpha-Fe took place during the milling, leading to the formation of the bcc-FeCo solid solution. It was found, that the lattice parameter (with values from 0.2861 nm to 0.2866 nm) of the investigated mechanically alloyed Fe-Co samples is larger for samples containing higher concentration of Co. The process of mechanical alloying was confirmed by Mössbauer spectrometry. The structure and powder size were observed by both TEM and SEM investigations. The coercivity (with values from 2.4 kA m-1 to 3.9 kA m-1) of the powders (measured by a Förster Koerzimat at room temperature) containing higher Co content exhibit larger values.JRC.F.4-Nuclear design safet

A case of novel DYT6 dystonia variant with serious complications after deep brain stimulation therapy: A case report.

BACKGROUND: DYT6 dystonia belongs to a group of isolated, genetically determined, generalized dystonia associated with mutations in the THAP1 gene. CASE PRESENTATION: We present the case of a young patient with DYT6 dystonia associated with a newly discovered c14G>A (p.Cys5Tyr) mutation in the THAP1 gene. We describe the clinical phenotype of this new mutation, effect of pallidal deep brain stimulation (DBS), which was accompanied by two rare postimplantation complications: an early intracerebral hemorrhage and delayed epileptic seizures. Among the published case reports of patients with DYT6 dystonia, the mentioned complications have not been described so far. CONCLUSIONS: DBS in the case of DYT6 dystonia is a challenge to thoroughly consider possible therapeutic benefits and potential risks associated with surgery. Genetic heterogeneity of the disease may also play an important role in predicting the development of the clinical phenotype as well as the effect of treatment including DBS. Therefore, it is beneficial to analyze the genetic and clinical relationships of DYT6 dystonia

Correction: A case of novel DYT6 dystonia variant with serious complications after deep brain stimulation therapy: A case report.

Following publication of the original article [1], the authors reported an error in author group. Author M. Zech should be affiliated to affiliations 6 and 7. The original article [1] has been updated