EuRhAl4Si2, crystallizes in tetragonal crystal structure and orders antiferromagnetically at ~12 ... more EuRhAl4Si2, crystallizes in tetragonal crystal structure and orders antiferromagnetically at ~12 K. The isothermal magnetization along the two principle directions is highly anisotropic despite Eu2+ being an S-state ion. The variation of entropy change, which is a measure of MCE, with field and temperature, calculated from the isothermal magnetization data taken at various temperatures along the principal crystallographic directions present interesting behavior in EuRhAl4Si2. In the magnetically ordered state the entropy change is non-monotonic below spin flip fields; however, in the paramagnetic region, it is negative irrespective of the strength of applied magnetic field. For H || [001] the maximum entropy change at 7 T is -21 J/Kg K around TN, which is large and comparable to the largest known values in this temperature range. The variation of the MCE with field strongly depends upon the direction of the applied magnetic field. Magnetic phase diagram of EuRhAl4Si2 derived from M(...
Superconducting properties of CeIr3 single crystal with rhombohedral structure were examined for ... more Superconducting properties of CeIr3 single crystal with rhombohedral structure were examined for the first time using DC magnetization, specific heat, and electrical resistivity measurements. A bul...
Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2013), 2014
We have carried out detailed magnetization, heat capacity, electrical resistivity and 151 Eu Moss... more We have carried out detailed magnetization, heat capacity, electrical resistivity and 151 Eu Mossbauer measurements on a single crystal of Eu 3 Rh 4 Sn 13 , grown by high temperature solution method using tin as a solvent. Despite its cubic symmetry the compound exhibits anisotropic magnetic behaviour at low temperatures, ordering antiferromagnetically at 11.2 K. The entropy associated with the magnetic transition is in conformity with the divalent state of the Eu ions. Based on the susceptibility data magnetic phase diagrams are constructed for field parallel to principal crystallographic axes. A magnetic hyperfine field of 28 T is obtained from the hyperfine field split 151 Eu Mossbauer spectrum at 4.2 K.
We have studied the anisotropic magnetic behavior of the rare earth intermetallic compound Dy6Cr4... more We have studied the anisotropic magnetic behavior of the rare earth intermetallic compound Dy6Cr4Al43. This compound crystallizes in the hexagonal symmetry and orders ferromagnetically at 8.3 K as confirmed by the magnetic susceptibility and heat capacity measurements. A significant anisotropy in the magnetization is observed between the c axis and the ab-plane. The easy axis liesin theab-plane at low temperatures; however it orients itselfalong the c-axis above 170 K as inferred from the susceptibility data.
EuRhAl4Si2, crystallizes in tetragonal crystal structure and orders antiferromagnetically at ~12 ... more EuRhAl4Si2, crystallizes in tetragonal crystal structure and orders antiferromagnetically at ~12 K. The isothermal magnetization along the two principle directions is highly anisotropic despite Eu2+ being an S-state ion. The variation of entropy change, which is a measure of MCE, with field and temperature, calculated from the isothermal magnetization data taken at various temperatures along the principal crystallographic directions present interesting behavior in EuRhAl4Si2. In the magnetically ordered state the entropy change is non-monotonic below spin flip fields; however, in the paramagnetic region, it is negative irrespective of the strength of applied magnetic field. For H || [001] the maximum entropy change at 7 T is -21 J/Kg K around TN, which is large and comparable to the largest known values in this temperature range. The variation of the MCE with field strongly depends upon the direction of the applied magnetic field. Magnetic phase diagram of EuRhAl4Si2 derived from M(...
Superconducting properties of CeIr3 single crystal with rhombohedral structure were examined for ... more Superconducting properties of CeIr3 single crystal with rhombohedral structure were examined for the first time using DC magnetization, specific heat, and electrical resistivity measurements. A bul...
Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2013), 2014
We have carried out detailed magnetization, heat capacity, electrical resistivity and 151 Eu Moss... more We have carried out detailed magnetization, heat capacity, electrical resistivity and 151 Eu Mossbauer measurements on a single crystal of Eu 3 Rh 4 Sn 13 , grown by high temperature solution method using tin as a solvent. Despite its cubic symmetry the compound exhibits anisotropic magnetic behaviour at low temperatures, ordering antiferromagnetically at 11.2 K. The entropy associated with the magnetic transition is in conformity with the divalent state of the Eu ions. Based on the susceptibility data magnetic phase diagrams are constructed for field parallel to principal crystallographic axes. A magnetic hyperfine field of 28 T is obtained from the hyperfine field split 151 Eu Mossbauer spectrum at 4.2 K.
We have studied the anisotropic magnetic behavior of the rare earth intermetallic compound Dy6Cr4... more We have studied the anisotropic magnetic behavior of the rare earth intermetallic compound Dy6Cr4Al43. This compound crystallizes in the hexagonal symmetry and orders ferromagnetically at 8.3 K as confirmed by the magnetic susceptibility and heat capacity measurements. A significant anisotropy in the magnetization is observed between the c axis and the ab-plane. The easy axis liesin theab-plane at low temperatures; however it orients itselfalong the c-axis above 170 K as inferred from the susceptibility data.
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