Search Results - "NIGAM, A. K"

Spin gapless semiconducting behavior in equiatomic quaternary CoFeMnSi Heusler alloy by Bainsla, Lakhan, Mallick, A. I., Raja, M. Manivel, Nigam, A. K., Varaprasad, B. S. D. Ch. S., Takahashi, Y. K., Alam, Aftab, Suresh, K. G., Hono, K.

“…In this paper, we report the signature of spin gapless semiconductor (SGS) in CoFeMnSi that belongs to the Heusler family. SGS is a new class of magnetic…”
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Itinerant electron metamagnetism and magnetocaloric effect in RCo2-based Laves phase compounds by SINGH, Niraj K, SURESH, K. G, NIGAM, A. K, MALIK, S. K, COELHO, A. A, GAMA, S

“…By virtue of the itinerant electron metamagnetism (IEM), the RCo2 compounds with R=Er, Ho and Dy are found to show first-order magnetic transition at their…”
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Observation of large positive magnetoresistance and its sign reversal in GdRhGe by Gupta, Sachin, Suresh, K.G., Nigam, A.K.

“…•GdRhGe shows two magnetic phase transitions, one collinear while other seems to be complex.•The ac susceptibility manifests the complex nature of second…”
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Observation of spontaneous magnetization jump and field-induced irreversibility in Nd5Ge3 by Maji, B, Suresh, K. G, Nigam, A. K

“…We report the observation of spontaneous and ultra-sharp jumps in the low-temperature magnetization isotherms of polycrystalline Nd5Ge3. Field-induced and…”
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Structural, magnetic, magnetocaloric and magnetotransport properties in Ge doped Ni–Mn–Sb Heusler alloys by Sahoo, Roshnee, Nayak, Ajaya K., Suresh, K.G., Nigam, A.K.

“…The effect of Ge substitution on the magnetic, magnetocaloric and transport properties of Ni45Co5Mn38Sb12−xGex (x=0–3) has been investigated. The decrease in…”
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Field induced ferromagnetic phase transition and large magnetocaloric effect in Sm0.55Sr0.45MnO3 phase separated manganites by Giri, S.K., Dasgupta, Papri, Poddar, A., Nigam, A.K., Nath, T.K.

“…(a) Magnetic field and particle size dependent TC of nanometric (black and red dot) and bulk (blue and wine dot) measured upon cooling (full dots) and warming…”
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Magnetic properties of CoFe2O4 synthesized by solid state, citrate precursor and polymerized complex methods: A comparative study by Varma, P.C. Rajath, Manna, Rudra Sekhar, Banerjee, D., Varma, Manoj Raama, Suresh, K.G., Nigam, A.K.

“…CoFe2O4 ferrite was synthesized by solid state, citrate gel precursor and polymerized complex methods. Both the solid state method and the polymerized complex…”
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The nature of the first order isostructural transition in GdRhSn by Gupta, Sachin, Suresh, K.G., Nigam, A.K., Mudryk, Y., Paudyal, D., Pecharsky, V.K., Gschneidner, K.A.

“…•GdRhSn has been studied by means of different measurements and shows an iso-structural transition in paramagnetic regime.•Experimental and theoretical studies…”
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Effect of annealing on the magnetic, magnetocaloric and magnetoresistance properties of Ni-Co-Mn-Sb melt spun ribbons by Sahoo, Roshnee, Raj Kumar, D.M., Arvindha Babu, D., Suresh, K.G., Nigam, A.K., Manivel Raja, M.

“…The structural, magnetic, magnetocaloric and magnetotransport properties of Ni46Co4Mn38Sb12 melt spun ribbons have been systematically investigated. The…”
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Magnetic behaviour of the orthochromite La0.5Gd0.5CrO3 by SHARMA, Neha, SRIVASTAVA, Bipin K, KRISHNAMURTHY, Anjali, NIGAM, A. K

“…Magnetic behaviour of the perovskite La0.5Gd0.5CrO3 has been studied. The orthochromite orders canted antiferromagnetically below Neel temperature T N of a…”
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Magnetocaloric effect in textured rare earth intermetallic compound ErNi by Sankar, Aparna, Chelvane, J. Arout, Morozkin, A. V., Nigam, A. K., Quezado, S., Malik, S. K., Nirmala, R.

“…Melt-spun ErNi crystallizes in orthorhombic FeB-type structure (Space group Pnma, no. 62) similar to the arc-melted ErNi compound. Room temperature X-ray…”
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Structure and magnetic properties of Sr2CoRuO6 by Phatak, Rohan, Krishnan, K., Sali, S.K., Das, A., Nigam, A.K.

“…X-ray, neutron diffraction, magnetization, and resistivity measurements have been carried out on polycrystalline Sr2CoRuO6. It crystallizes with monoclinic…”
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Hysteresis in magnetization–temperature curves of the orthochromite La0.1Gd0.9CrO3 by Sharma, Neha, Srivastava, Bipin K., Krishnamurthy, Anjali, Nigam, A.K.

“…FC data in both cooling (black filled circles) and warming (red open circles) modes for La0.1Gd0.9CrO3 taken at 20, 100 and 400Oe. Insets show the behavior…”
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Superconductivity in a low carrier density system: A single crystal study of cubic Y3Ru4Ge13 by Prakash, Om, Thamizhavel, A., Nigam, A.K., Ramakrishnan, S.

“…•Y3Ru4Ge13 is a low carrier density (1020/cm3) semimetal and exhibits bulk superconductivity.•The superconductivity arises due to inter-valley electron-phonon…”
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Signature effects of spin clustering and distribution of spin couplings on magnetization behaviour in Ni-Fe-Mo and Ni-Fe-W alloys by Banerjee, Mitali, Singh, Avinash, Majumdar, A K, Nigam, A K

“…Spontaneous magnetization as a function of temperature is investigated for a number of disordered Ni-Fe-Mo and Ni-Fe-W alloys using superconducting quantum…”
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Electrical resistivity in disordered NiMn alloys around the multicritical point by Pal, Pampa, Majumdar, A.K., Nigam, A.K.

“…We present the results of the temperature dependence of the electrical resistivity, ρ of disordered Ni100−xMnx alloys (x=15–37) in the temperature range…”
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Size-induced ferromagnetism and metallicity in Nd0.5Sr0.5MnO3 nanoparticles: A neutron diffraction study by Kundu, S., Das, A., Nath, T.K., Nigam, A.K.

“…The phenomenon of destabilization of antiferromagnetic insulating state into a ferromagnetic metallic one in Nd0.5Sr0.5MnO3 with the variation of…”
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Electron transport in permalloys with V/Mo/W additions by Banerjee, Mitali, Majumdar, A.K., Nigam, A.K.

“…The electrical resistivity, as functions of temperatures down to 2K and magnetic fields up to 5T, has been investigated for a number of disordered Ni–Fe–V,…”
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Structural and magnetic properties of quasi-one-dimensional doped LiCuVO4 by Kumar, Abhishek, Kumari, Poonam, Das, A., Dwivedi, G.D., Shahi, P., Shukla, K.K., Ghosh, A.K., Nigam, A.K., Chattopadhyay, K.K., Chatterjee, Sandip

“…The Neutron diffraction, X-ray photoemission and Magnetic properties of Zn, Co and Mn-doped LiCuVO4 were investigated. Both with Zn and Co doping the…”
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Ni and Ni–nickel oxide nanoparticles with different shapes and a core–shell structure by Nayak, Bibhuti B., Vitta, Satish, Nigam, A.K., Bahadur, D.

“…Ni nanoparticles with different shapes and having a core–shell structure of Ni–nickel oxide have been prepared by a combination of chemical and gaseous…”
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