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In NdCo₂Si₂, partial substitution of Co by V having a larger atomic radius results in negative pressure affecting the magnetic properties of the compound. The samples Nd(Co_{1-x}V_{x})₂Si₂ (x=0, 0.20, 0.35) have been prepared and characterized using X-ray diffraction. The parent compound NdCo₂Si₂ is antiferromagnetic with T_{N} of 34 K whereas the temperature dependence of inverse susceptibility in...
A series of samples of the system Co_{1-x}Zn_{x}Fe_{2}O_{4} (x = 0.0, 0.3, 0.4, 0.5 and 0.8) have been prepared by the usual ceramic technique. X-ray analysis shows that they are cubic spinel (single phase). The lattice parameter a and the bulk density D are measured for the samples. The substitution experiments replacing Co^{2+} by Zn^{2+} furnish new significant fact concerning the magnetic behaviour...
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