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We have investigated for the first time the magnetic behaviour of an intermetallic compound, Dy4RhAl, crystallizing in Gd4RhIn type cubic structure containing 3 sites for rare-earth (R), by several bulk measurements down to 1.8 K. This work…

Strongly Correlated Electrons · Physics 2023-04-21 K. K. Iyer , S. Matteppanavar , S. Dodamani , K. Maiti , E. V. Sampathkumaran

We report the results of magnetic, heat-capacity, electrical and magnetoresistance measurements on Ho4RhAl and Er4RhAl, characterized by 3 sites for rare-earths (R). Antiferromagnetic ordering sets in at (T_N =) about 8.8 and 4.0 K…

Strongly Correlated Electrons · Physics 2021-08-18 Ram Kumar , E. V. Sampathkumaran

We have investigated the magnetic behavior of the nanocrystalline form of a well-known Laves phase compound, ErCo2 - the bulk form of which has been known to undergo an interesting first-order ferrimagnetic ordering near 32 K - synthesized…

Strongly Correlated Electrons · Physics 2015-05-13 Sitikantha D Das , Niharika Mohapatra , Kartik K Iyer , R. D. Bapat , E. V. Sampathkumaran

We report temperature (T) dependence (2-330 K) of DC and AC magnetization (M), isothermal remnant magnetization (M_IRM), heat capacity (C), electrical resistivity (rho), and magnetoresistance (MR) of a ternary intermetallic compound,…

Strongly Correlated Electrons · Physics 2019-07-08 Ram Kumar , Jyoti Sharma , Kartik K Iyer , E. V. Sampathkumaran

The magnetic behavior of the quaternary compounds, RCr2Si2C (R = La, Ce), has been investigated by magnetization (M) and heat-capacity (C) measurements (1.8-300 K) in the bulk polycrystals and nano forms (<1 {\mu}m) obtained by high-energy…

Strongly Correlated Electrons · Physics 2011-11-29 K. Mukherjee , Kartik K. Iyer , E. V. Sampathkumaran

We report complex magnetic, magnetoresistance (MR) and magnetocaloric properties of Gd4RhAl and Tb4RhAl forming in the Gd4RhIn type cubic structure. Though the synthesis of the compounds was reported long ago, to our knowledge, no attempt…

Strongly Correlated Electrons · Physics 2021-04-30 Ram Kumar , Kartik K Iyer , P. L. Paulose , E. V. Sampathkumaran

We report the results of ac and dc magnetic susceptibility (chi), heat-capacity (C), isothermal magnetization and isothermal remanent magnetization measurements on the compound, Sr3CuRhO6, crystallizing in a K4CdCl6-derived monoclinic…

Strongly Correlated Electrons · Physics 2007-05-23 E. V. Sampathkumaran , Niharika Mohapatra , Sudhindra Rayaprol , Kartik K Iyer

The compound, LaMn2Ge2, crystallizing in ThCr2Si2-type tetragonal crystal structure, has been known to undergo ferromagnetic order below (T_C=) 326 K. In this article, we report the magnetic behavior of nanocrystalline form of this…

Strongly Correlated Electrons · Physics 2008-06-13 S. Narayana Jammalamadaka , Sitikantha D Das , B. A. Chalke , E. V. Sampathkumaran

Despite intense research in the field of strongly correlated electron behavior for the past few decades, there has been very little effort to understand this phenomenon in nano particles of the Kondo lattices. In this article, we review the…

Strongly Correlated Electrons · Physics 2015-05-27 E. V. Sampathkumaran , K. Mukherjee , Kartik K Iyer , Niharika Mohapatra , Sitikantha D Das

The magnetic behavior of the compound, Gd3Ru4Al12, which has been reported to crystallize in a hexagonal structure about two decades ago, had not been investigated in the past literature despite interesting structural features (that is,…

Strongly Correlated Electrons · Physics 2016-06-22 Venkatesh Chandragiri , Kartik K Iyer , E. V. Sampathkumaran

We have investigated the magnetic behavior of the nano crystals, synthesized by high-energy ball-milling, for a well-known geometrically frustrated spin-chain system, Ca3CoRhO6, and compared its magnetic characteristics with those of the…

Strongly Correlated Electrons · Physics 2015-05-13 Niharika Mohapatra , Kartik K Iyer , B. A. Chalke , E. V. Sampathkumaran

We have investigated the magnetic behavior of ball-milled fine particles of well-known Kondo lattices, CeAu2Si2, CePd2Si2 and CeAl2, by magnetization and heat-capacity studies in order to understand the magnetic behavior when the particle…

Strongly Correlated Electrons · Physics 2015-06-03 K. Mukherjee , Kartik K. Iyer , E. V. Sampathkumaran

Severe plastic deformation using high-pressure torsion of ternary Cu-based materials (CuFeCo and CuFeNi) was used to fabricate bulk samples with a nanocrystalline microstructure. The goal was to produce materials featuring the granular…

Materials Science · Physics 2022-08-26 M. Kasalo , S. Wurster , M. Stückler , M. Zawodzki , L. Weissitsch , R. Pippan , A. Bachmaier

In this report, the magnetic behaviour of $NiCr_{2}O_{4}$ bulk and nanoparticle samples under different applied magnetic field has been investigated extensively. Nanoparticles of $NiCr_{2}O_{4}$ were obtained by mechanical milling of…

Strongly Correlated Electrons · Physics 2013-11-26 H. Singh , T. Ono , T. Chakraborty , K. Srikanth , A. Venimadhav , R. Chandra , C. Mitra , U. Kumar

We have performed DC and AC magnetization measurements for the rare-earth magnetic alloy systems Gd_{0.62}Y_{0.38}, Tb_{0.86}Y_{0.14}, and Dy_{0.97}Y_{0.03}. These materials commonly exhibit a proper helical magnetic structure, and…

Strongly Correlated Electrons · Physics 2016-02-10 Teruo Yamazaki , Junno Ishiyama , Yosuke Noya , Mai Kurihara , Hiroshi Yaguchi

We investigate magnetic ordering in metallic Ba[Fe(1-x)Mn(x)](2)As(2) and discuss the unusual magnetic phase, which was recently discovered for Mn concentrations x > 10%. We argue that it can be understood as a Griffiths-type phase that…

We report the synthesis, structure, and magnetic and transport properties of a new ternary intermetallic compound PrRhSn3 which crystallizes in LaRuSn3-type cubic structure (space group Pm-3n). At low applied fields the dc magnetic…

Strongly Correlated Electrons · Physics 2014-07-22 V. K. Anand , D. T. Adroja , A. D. Hillier

We report the particle size dependent magnetic behaviour in the antiferromagnetic spinel CoRh2O4. The nanoparticles were obtained by mechanical milling of bulk material, prepared under sintering method. The XRD spectra show that the samples…

Disordered Systems and Neural Networks · Physics 2007-05-23 R. N. Bhowmik , R. Nagarajan , R. Ranganathan

We report magnetic behavior of two intermetallics-based kagome lattices, Tb3Ru4Al12 and Er3Ru4Al12, crystallizing in the Gd3Ru4Al12-type hexagonal crystal structure, by measurements in the range 1.8-300 K with bulk experimental techniques…

Strongly Correlated Electrons · Physics 2017-08-02 Sanjay Kumar Upadhyay , Kartik K Iyer , E. V. Sampathkumaran

The study of the magnetic properties depending upon mechanical milling of the ferromagnetic polycrystalline TbAl_2 material is reported. The Rietveld analysis of the X-ray diffraction data reveals a decrease of the grain size down to 14 nm…

Disordered Systems and Neural Networks · Physics 2015-06-25 D. P. Rojas , L. Fernandez Barquin , J. Rodriguez Fernandez , J. I. Espeso , J. C. Gomez Sal
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