. "First Seeheim Conference on Magnetism SCM2001 - Program and Abstracts." . "RIV/68081723:_____/01:07013272!RIV/2003/AV0/A07003/N" . "University of Darmstadt" . . . . "Darmstadt" . "Mg-Fe nanocomposite was prepared using spark synthesis of pure Mg and Fe electrodes. The as-prepared powder was separated into two parts using a magnetic separation and a sedimentation procedure. The nanocrystalline powder (paramagnetic at room temperature) was analysed using x-ray diffraction and M\u00F6ssbauer spectroscopy. From the x-ray diffraction measurements Mg, MgO, and a-Fe were recognized. According to the M\u00F6ssbauer spectra analysis, iron atoms were identified in following phases: a-Fe, Fe in Mg, and FeO. The FeO was probably present as MgO-FeO solid solution and not recognized by x-ray diffraction. The Fe in Mg phase was represented in the M\u00F6ssbauer spectra as two doublets with isomer shifts d1=0.16 0.02 and d2=0.43 0.01 mm/s relative to a-Fe and quadrupole splittings s1=0.84 0.02 and s2=0.80 0.01 mm/s. Low temperature magnetic measurements showed spin-glass like behaviour of the powder. Annealing in vacuum (10-3 Pa) or in the protective atmosphere (H2) caused transformation of the Fe in Mg phas" . "Preparation and properties of Mg-Fe nanocomposite."@en . . "2001-09-09+02:00"^^ . "692529" . . "[868957E341C0]" . . "Preparation and properties of Mg-Fe nanocomposite." . . "P(GA106/99/0183), P(GA202/01/0668), P(OC 523.20), Z(AV0Z2041904)" . "Schneeweiss, Old\u0159ich" . . . "nanocomposites; M\u00F6ssbauer spectroscopy"@en . "105" . . "Preparation and properties of Mg-Fe nanocomposite." . . "0"^^ . "Jir\u00E1skov\u00E1, Yvonna" . "Preparation and properties of Mg-Fe nanocomposite."@en . "0"^^ . "2"^^ . . "Mg-Fe nanocomposite was prepared using spark synthesis of pure Mg and Fe electrodes. The as-prepared powder was separated into two parts using a magnetic separation and a sedimentation procedure. The nanocrystalline powder (paramagnetic at room temperature) was analysed using x-ray diffraction and M\u00F6ssbauer spectroscopy. From the x-ray diffraction measurements Mg, MgO, and a-Fe were recognized. According to the M\u00F6ssbauer spectra analysis, iron atoms were identified in following phases: a-Fe, Fe in Mg, and FeO. The FeO was probably present as MgO-FeO solid solution and not recognized by x-ray diffraction. The Fe in Mg phase was represented in the M\u00F6ssbauer spectra as two doublets with isomer shifts d1=0.16 0.02 and d2=0.43 0.01 mm/s relative to a-Fe and quadrupole splittings s1=0.84 0.02 and s2=0.80 0.01 mm/s. Low temperature magnetic measurements showed spin-glass like behaviour of the powder. Annealing in vacuum (10-3 Pa) or in the protective atmosphere (H2) caused transformation of the Fe in Mg phas"@en . "2"^^ . . "1"^^ . "Seeheim [DE]" . . . . . . "RIV/68081723:_____/01:07013272" . .