Thermal decomposition of nickel hexa(format0) fetrate(DQ decahydrate i.e. Ni3ve(HC00)s]2. 10H,O has been studied upto 913 K in static air atmosphere employing TG,DTG,DTApSC,XRD$!SR, Mossbauer and f i r e d spectroscopic techniques. Dehydration occurs in two stages in the temperature range of 348-423 K. Immediately &r the removal of the last water molecule, the anhydrous complex undergoes decomp...

Copyright 1996-2012 Researchpub.org. All rights Reserved. 18 Abstract— The effect of strontium dopping on magnetic properties of neodymium orthoferrimanganites have been investigated using neutron diffraction and MÖssbauer spectroscopy. All samples prepared using solid state reaction from pure oxides. The XRD reflections exhibited single phase structure of both samples. The neutron diffraction...

Mossbauer spectra of jacobsite have been recorded at temperatures of 4.2, 125, 180, 240 and 300 K and with an external magnetic field of 60 kOe applied parallel to the incident radiation at 4.2 K. The results show the presence of two different magnetic hyperfine interactions associated with the iron nuclei. Spectra of samples in external magnetic fields indicate the same sign for the magnetic h...

Known antiferronlagnetic nlaterials far out nwnber known ferronlagnetic and ferrinlagnetic nlaterials. More­ over, the antife rronlagnets display a wide variety of phase transitions in addition to the paranlagnetic to antiferro­ nlagnetic transition at the Neel point, that nlake thenl a rich source of infornlation about the relations hip between exchange interactions, structure, and phase trans...

A method for obtaining accurate, quantitative 57Fe Mössbauer spectra from biological samples is illustrated stepwise in a data reduction procedure. Exact criteria are presented for deciding when it is necessary to account for the effects of the Beer-Lambert law in the Mössbauer spectra from biological samples. This procedure makes extensive use of the fast Fourier transform and other computer t...

Laser-evaporated iron was deposited onto solid oxygen at 20 K to produce stratified samples consisting of Fe and 02 layers. The Mossbauer spectra of these samples were acquired in order too investigate their oxidation states and chemical properties. The reaction produced the trivalent iron oxide particles whose size varied depending on the amount of Fe atoms deposited on the solid oxygen. Sampl...