eng Ansari Education and Research Society Journal of Ultra Scientist of Physical Sciences April 2009 21 1 179 184 jusps-B 1093 article R.K.GEDAM (rajugedam40@yahoo.co.in 1 D.K.KULKARNI 2 N.V. DHOKE 1 Department of Physics, Institute of Science, Nagpur - 440 001 (MS) INDIA Prof. & Head of Department of Physics (Retd.) Institute of Science, Nagpur (MS) INDIA <p style="text-align: justify;">The present study focus on the structural and physical studies of chalcopyrite (CuFeS₂) samples in Laboratory. The sample has been characterized by X-ray diffraction technique and revealed that the sample is possesses tetragonal crystal structure with chalcopyrite structure and preferred orientation along (112) plane with the space group I 4 2d and point group 4 2m. The value of lattice parameter a and c for the sample is found to be 5.293 &ordm;A and 10.423 &ordm;A respectively. The d.c. electrical resistivity measurement have been carried out over temperature range of 300&deg; to 800&deg;K. The temperature dependence of electrical resistivity exhibited two activation energies. The magnetic susceptibility value is found to be 41.75 x 10^-8m³kg^-1(S.I.unit). These values are compared with the standard data and showed that the sample is having tetragonal system structure, semiconductor behavior and paramagnetic which become ferromagnetic after applied external field.</p> <p>&nbsp;</p> https://ultraphysicalsciences.org/paper/1093/ Electrical resistivity chalcopyrite (CuFeS2) magnetic mineral.