S K Paranjpe
Articles written in Pramana – Journal of Physics
Volume 52 Issue 1 January 1999 pp 111-120
Magnetic structure of (Fe0.97Cr0.03)2P
Sudhish Kumar S K Paranjpe Bipin K Srivastava Anjali Krishnamurthy V C Sahni
Magnetic behaviour of di-metal iron phosphide with a small substitution of iron by chromium, (Fe0.97Cr0.03)2P, has been studied using SQUID magnetometry and powder neutron diffraction. It is paramagnetic at temperatures above ∼180 K with persisting short range ferromagnetic (FM) order. At lower temperatures three different regions of magnetic behaviour are identified. FM order evolves in the region 180 K-120 K but much more slowly and with much less magnetic moments than in Fe2P. In the region 120 K-50 K negative exchange interactions gain some importance leading to a loss of FM order. Below 50 K FM interactions again dominate. Pinning centres influence the behaviour at low temperature up to ∼100 K.
Volume 63 Issue 2 August 2004 pp 189-197
Structural study and electrical properties of Zr-doped Nd2Sn2O7 pyrochlore compounds
Y D Kolekar S B Kulkarni Keka Chakraborty A Das S K Paranjpe P B Joshi
Nd2Sn2O7 pyrochlores with the substitution of Zr4+ were prepared by conventional ceramic double sintering technique. The single-phase formation was confirmed by X-ray diffraction and neutron diffraction techniques. Relative intensity calculations for X-ray diffraction analysis were performed for oxygen positional parameters
Volume 63 Issue 2 August 2004 pp 199-205
Magnetization and neutron diffraction studies on FeCrP
Sudhish Kumar Anjali Krishnamurthy Bipin K Srivastava A Das S K Paranjpe
Crystal structure and magnetic behaviour of FeCrP have been investigated using magnetization and neutron diffraction measurements. FeCrP crystallizes in orthorhombic FeZrP type structure (Pnma space group,
Volume 63 Issue 2 August 2004 pp 207-212
Magnetic behaviour of (Fe0.85Cr0.15)2As
S K Jain A Das Bipin K Srivastava Anjali Krishnamurthy S K Paranjpe
Magnetization and neutron diffraction measurements have been made on the title pseudo-binary of tetragonal anti-ferromagnets Fe2 As and Cr2 As. In this system antiferromagnetic (AFM) ordering appears below 310 K. The moments are confined in the
Volume 97, 2023
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