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Mallik, Ramesh Chandra; Paulose, P. L.; Sampathkumaran, E. V.; Patil, Swapnil; Nagarajan, V.

doi:10.1103/physrevb.55.8369

Cited by 50 publications

(38 citation statements)

References 21 publications

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“…Similar unusually large values of ␥ have been reported in a few other Gd-based intermetallic compounds. [32][33][34] The reason for the enhancement of ␥ must be the short range correlations arising from the polarization of the Ni 3d band. The fact that the molecular field that is responsible for the polarization of the 3d band is large in Gd is responsible for the observation of the highest value of ␥ in the present series.…”

Section: Resultsmentioning

confidence: 99%

Magnetocaloric and magnetotransport properties ofR2Ni2Sncompounds (R=Ce, Nd, Sm, G

et al. 2008

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We report a detailed magnetic, magnetocaloric, and magnetotransport study on R 2 Ni 2 Sn compounds with different rare earths. The magnetic state of these compounds is found to be complex because of the coexistence of ferromagnetic and antiferromagnetic components. These compounds show phenomena such as multiple magnetic transitions, nonsaturation of magnetization, and metamagnetic transitions. Analysis of the zero-field heat capacity data shows that the magnetic entropy is less than the theoretical value, indicating the presence of some moment on Ni. Schottky anomaly is present in the magnetic heat capacity data of Sm 2 Ni 2 Sn. The temperature variation of magnetocaloric effect reflects the magnetization behavior. Tb 2 Ni 2 Sn and to a less extent Gd 2 Ni 2 Sn show oscillatory magnetocaloric effect. The variation of magnetocaloric effect is correlated with the ferromagnetic-antiferromagnetic phase coexistence. The electrical resistivity analysis has shown that the electron-magnon scattering is prominent at low temperature, while phonon scattering modified by the s-d interaction is crucial at high temperatures. The magnetoresistance is very large in Ce 2 Ni 2 Sn and shows a quadratic dependence on the field, implying the role of spin fluctuations in determining the transport behavior. Large magnetoresistance has been observed in other compounds as well.

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Section: Resultsmentioning

confidence: 99%

Magnetocaloric and magnetotransport properties ofR2Ni2Sncompounds (R=Ce, Nd, Sm, G

et al. 2008

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“…Early measurements reported the Curie temperature (T C ) around 71-73K, 3,4 but as constituent material purities and experimental techniques improved, the Curie temperature has settled at 69K. 11,12,16,17,19 The Weiss temperature (θ P ) is 72.8K and the effective magnetic moment (p eff ) is 8.23μ B /f.u. calculated from the Curie-Weiss law.…”

Section: Magnetic Propertiesmentioning

confidence: 99%

“…In 1964 two more publications from Walline et al and Abrahams et al would conclude that the crystal structure of GdNi is the CrB (Cmcm) crystal structure type. 3,4 Beginning with these two papers, and following over the next three decades, the basic magnetic, electrical, and thermal properties of GdNi were established [5][6][7][8][9][10][11][12][13][14] . GdNi was discovered to have spontaneous magnetostriction properties in 1998 by Gratz et al finding giant magnetostriction when cooling below the Curie temperature without a crystal structure transformation.…”

Section: Chapter 1 Introductionmentioning

confidence: 99%

Single crystal Processing and magnetic properties of gadolinium nickel

Shreve

2012

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“…A sample of polycrystalline DyNi was prepared by Tripathy et al [13] and its magnetocaloric effects have been studied on varying temperature scale by using powder X-ray diffractogram. Later, the magnetic properties of lanthanides-nickel intermetallic compounds and their relative hydrides have been studied by Yaropolov et al [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…The rare earth elements on combining with transition metals show peculiar characteristics like good oxidation resistance and excellent strength [1]. Due to large magnetic moments and magnetocaloric effect (MCE) they also have applications in the fabrication of permanent magnets, magnetostrictive devices, magnetooptical recorders [2] and magnetic refrigeration [3][4][5][6][7][8][9][10]. These are also taken as first choice for the purpose of hydrogen storage materials [11].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Investigations of Structural Phase Transitions and Magnetic, Electronic and Thermal Properties of DyNi: Under High Pressures and Temperatures

Rana

Verma

2014

ISRN Condensed Matter Physics

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Present work is influenced by the requirement of investigation of rare earth intermetallics due to the nonavailability of theoretical details and least information from experimental results. An attempt has been made to analyse the structural, electronic, magnetic and thermal properties of DyNi using full potential linear augmented plane wave method based on density functional theory. DyNi differs from other members of lanthanides nickelates as in ground state it crystallizes in FeB phase rather than orthorhombic CrB structure. The equilibrium lattice constant, bulk modulus, and pressure derivative of bulk modulus are presented in four polymorphs (FeB, CrB, CsCl and NaCl) of DyNi. At equilibrium the cell volume of DyNi for FeB structure has been calculated as 1098.16 Bohr 3 which is comparable well with the experimental value 1074.75 Bohr 3 . The electronic band structure has been presented for FeB phase. The results for thermal properties, namely, thermal expansion coefficient, Gruneisen parameter, specific heat and Debye temperature at higher pressure and temperatures have been reported. The magnetic moments at equilibrium lattice constants have also been tabulated as the rare earth ions associated with large magnetic moments increase their utility in industrial field for the fabrication of electronic devices due to their magnetocaloric effect used in magnetic refrigeration.

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Coexistence of localized and (induced) itinerant magnetism and heat-capacity anomaliesinGd1−x

Cited by 50 publications

References 21 publications

Magnetocaloric and magnetotransport properties ofR2Ni2Sncompounds (R=Ce, Nd, Sm, G

Magnetocaloric and magnetotransport properties ofR2Ni2Sncompounds (R=Ce, Nd, Sm, G

Single crystal Processing and magnetic properties of gadolinium nickel

Theoretical Investigations of Structural Phase Transitions and Magnetic, Electronic and Thermal Properties of DyNi: Under High Pressures and Temperatures

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