Search Results - "Srinivasu, VV"

Spin canting and magnetism in nano-crystalline Zn^sub 1−x^Al^sub x^O by Das, J, Mishra, DK, Srinivasu, VV

“…Al doped nanocrystalline ZnO (~30 nm) with composition Zn1-xAlxO (0.005 < x < 0. 03) were synthesised by pyrophoric technique and sintered at 650 °C. We…”
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Low field microwave absorption in iron nanoparticles embedded polyaniline nanofibers composite by Bhaumik, Madhumita, Maity, Arjun, Mahule, T.S., Srinivasu, V.V.

“…[Display omitted] •Iron nanoparticle embedded polyaniline nanofibers were prepared by a facile method.•Low field microwave absorption (LFMA) was not perceived…”
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Origin of magnetism probed through electron spin resonance studies in Zn^sub 1-x^Mn^sub x^O synthesized by chemical route by Routray, Urmishree, Mohapatra, Jyoshnarani, Srinivasu, VV, Mishra, DK

“…Nanocrystalline Zn1-xMnxO (0.005 ≤ x ≤ 0.02) shows room temperature ferromagnetic behaviour. The electron spin resonance spectra of Zn1-xMnxO (0.005≤ x ≤ 0.02)…”
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Possible observation of Griffith phase over large temperature range in plasma sintered La0.^sub 67^Ca^sub 0.33^MnO^sub 3 by Mishra, DK, Roul, BK, Singh, SK, Srinivasu, VV

“…We report on the possible observation of Griffith phase in a wide range of temperature (>272-378 K) in the 2.5 min plasma sintered La0.67Ca0.33MnO3 (LCMO) as…”
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Cr doped ZnO: Investigation of magnetic behaviour through SQUID and ESR studies by Amami, P.E., Das, J., Mishra, D.K., Srinivasu, V.V., Sahu, D.R., Roul, B.K.

“…Polycrystalline Zn1-xCrxO (0.01 ≤ x ≤ 0.09) samples synthesised by solid state reaction technique were sintered at different temperatures following slow step…”
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Chemical pressure induced change in multiferroicity of Bi^sub 1+2x^Gd^sub 2x/2^Fe^sub 1-2x^O^sub 3^ bulk ceramics by Pradhan, SK, Sahu, DR, Rout, PP, Das, SK, Pradhan, AK, Srinivasu, VV, Roul, BK

“…We have optimized Gd ion substitution in BiFeO3 (BFO) and observed prominently change in structural, electrical and magnetic behavior of Bi1+2xGd2x/2Fe1-2xO3…”
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Anomalous non-resonant microwave absorption in SmFeAs(O,F) polycrystalline sample by Onyancha, R.B., Shimoyama, J., Singh, S.J., Hayashi, K., Ogino, H., Srinivasu, V.V.

“…•The non-resonant microwave absorption (NRMA) line shape in evolved with microwave power.•Observed a cross over from ‘normal’ absorption to ‘anomalous’…”
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Ferromagnetism at room temperature in La0.8Ca0.2MnO3 thin films by Shreekala, R., Rajeswari, M., Srivastava, R. C., Ghosh, K., Goyal, A., Srinivasu, V. V., Lofland, S. E., Bhagat, S. M., Downes, M., Sharma, R. P., Ogale, S. B., Greene, R. L., Ramesh, R., Venkatesan, T., Rao, R. A., Eom, C. B.

“…Anomalously high metal–insulator transition temperature Tp and ferromagnetic transition temperature Tc have been observed in thin films of La0.8Ca0.2MnO3…”
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Oscillations in surface resistance with applied magnetic field variation in BSCCO aged superconducting samples by RAYCHAUDHURI, P, SRINIVASU, V. V

“…Anomalous oscillations have been observed in surface resistance at 77 K in BSCCO (2212) aged bulk samples in an applied d.c. magnetic field varying from 0 to…”
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Mechanism of a– c oriented crystal growth of YBCO thin films by ion beam sputtering by Endo, T, Itoh, KI, Hashizume, A, Kohmoto, H, Takahashi, E, Morimoto, D, Srinivasu, V.V, Masui, T, Niwano, K, Nakanishi, H

“…In order to verify the critical factor of surface migration on a– c orientations of YBCO thin film growth, the surface roughness of MgO substrates was…”
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La1-xBaxMnOz thin film growth by ion beam sputtering : effects of oxygen partial pressure by TADA, M, YAMADA, J, MUNOZ, J. S, COLINO, J. M, ENDO, T, SRINIVASU, V. V, SREEDEVI, V, KOHMOTO, H, HASHIZUME, A, INAMORI, Y, TANAKA, T, HARROU, A, NOGUES, J

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Anisotropy in Bi2212 single crystals studied by non-resonant microwave absorption: hysteresis and line shapes by Srinivasu, V.V, Sreedevi, V, Hashizume, A, Kohmoto, H, Moehlecke, S, Ricardo da Silva, R, Kopelevich, Y, Endo, T

“…Microwave absorption in a high quality Bi2212 single crystal is studied at 77 K, using non-resonant microwave absorption (NMA) technique. NMA line shape and…”
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Microstructural dependence of penetration depth of Ag-doped YBa2Cu3O7−δ thin films probed by atomic force microscopy by Pinto, R., Kaur, Davinder, Rao, M. S. Ramachandra, Apte, P. R., Srinivasu, V. V., Vijayaraghavan, R.

“…The magnetic penetration depth λ of laser ablated 5 wt % Ag-doped YBa2Cu3O7−δ thin films has been measured in the thickness range 1500–4000 Å and in the…”
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Response to “Comment on ‘Ferromagnetism at room temperature in La0.8Ca0.2MnO3 thin films’ ” [Appl. Phys. Lett. 76 , 1209 (2000)] by Shreekala, R., Rajeswari, M., Srivastava, R. C., Ghosh, K., Goyal, A., Srinivasu, V. V., Lofland, S. E., Bhagat, S. M., Downes, M., Sharma, R. P., Ogale, S. B., Greene, R. L., Ramesh, R., Venkatesan, T., Rao, R. A., Eom, C. B.

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Investigation of microwave losses in Nd0.67Sr0.33MnO3 films by Strikovski, M., Xie, Lei-Ming, Miller, J.H., Srinivasu, V.V., Wosik, J.

“…The correlation between microwave losses at 13 GHz and dc transport and magnetic properties of epitaxial Nd0.67Sr0.33MnO3 films is studied as a function of…”
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Microwave surface resistance in Lu1-xPrxBa2Cu3O7-δ thin films by SRINIVASU, V. V, RAYCHAUDHURI, P, D'SOUZA, C. P, PINTO, R, VIJAYARAGHAVAN, R

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Microwave magnetoimpedance in a bulk ceramic La0.67Ca0.33MnO3 manganite by SRINIVASU, V. V, SREEDEVI, V, PRADHAN, A. K, ROUL, B. K

“…Microwave magnetoimpedance measurements at liquid nitrogen temperature are reported for a magnetically inhomogeneous LCMO bulk ceramic sample. The MI is…”
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Thickness dependence of microwave surface resistance and critical current density in Ag-YBa2Cu3O7-x thin films by SRINIVASU, V. V, JESUDASAN, J, KAUR, D, PINTO, R, VIJAYARAGHAVAN, R

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Magnetic shielding effects in Ag-doped and pure YBa2Cu3O7-x thin films probed by non-resonant microwave absorption by SRINIVASU, V. V, PINTO, R, SASTRY, M. D

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Temperature-dependent phase reversal of nonresonant microwave and rf absorption in high-Tc superconductors by BHAT, S. V, SRINIVASU, V. V, KUMAR, N

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