Published Papers

Electron Paramagnetic Resonance Spectroscopy is an experimental procedure where a paramagnetic sample is kept in a magnetic field and exposed to microwave radiation. At a specific magnetic field, the energy required to jump from the normal state of the electrons on that sample to the excited state is the same as the energy being provided by the radiation. Hence the electrons absorb the energy and attain the higher state. This absorption can be detected. By looking at what magnetic field allowed for this jump, it is possible to determine several properties about the sample. In this paper, this technique is used on DPPH and MnCl2 samples. The results have then been compared to the expected known values for those samples. In the case of DPPH, the results obtained line up with the expected values and properties. In the case of MnCl2, while measurements such as the number of hyperfine lines observed coincide with the expected ones, the hyperfine constant observed does not match the expected value. The temperature has been identified as a potential reason for this discrepancy.

Electron Paramagnetic Resonance (EPR) or Electron Spin Resonance (ESR) is employed to study systems with unpaired electrons, such as free radicals and transition metal ions. EPR provides valuable information about the structure and interactions of paramagnetic species within the system. In this study, EPR spectra of DPPH and MnCl2/H2O were analyzed to determine the paramagnetic species present. The g-factor, calculated as 0.71449 v(GHz)/B(kG), plays a crucial role in characterizing the samples. The investigation revealed multiple EPR peaks in MnCl2/H2O, suggesting the presence of diverse paramagnetic centers. However, the calculated average g value deviated significantly from the expected value, indicating a potential miscalculation of magnetic field values during the sweep range analysis. To ensure accuracy, the researchers recommended reevaluating the calculations and methodology. These findings contribute to a deeper understanding of paramagnetism and its potential applications in various scientific fields. Further research into MnCl2/H2O's properties holds promising prospects for un-king new insights into paramagnetic phenomena.