Výsledky vyhledávání - "Gundakaram, R."

A detailed investigation of $Y_{0.5}Ca_0.5}MnO_3$ with a very small radius of the A-site cations $(\langle r_A \rangle \approx 1.13 \AA)$ reveals the occurrence of a charge- ordering transition in the paramagnetic state, at a relatively high temperat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::24c38ab34a762986c6f6c1a89eeef78c
https://igi.indrastra.com/items/show/206548

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Electrical transport, magnetism, and magnetoresistance in ferromagnetic oxides with mixed exchange interactions: A study of the $La_0_._7$$Ca_0_._3$$Mn_1_-_x$$Co_xO_3$ system

Autor: Gayathri, N, Raychaudhuri, AK, Tiwary, SK, Gundakaram, R, Arulraj, A, Rao, CNR

Publikováno v: IndraStra Global.

In this paper we report the results of an extensive investigation of the La0.7Ca0.3Mn1-xCoxO3 system. Substitution of Mn by Co dilutes the double-exchange (DE) mechanism and changes the long range ferromagnetic order of La0.7Ca0.3MnO3 to a cluster gl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=issn23813652::363a2defc2a718318541f8002295d76e
https://igi.indrastra.com/items/show/206476

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Effect of Substitution of $Cr^{3+}$ in Place of $Mn^{3+}$ in Rare-Earth Manganates on the Magnetism and Magnetoresistance: Role of Superexchange Interaction and Lattice Distortion in $LnMn_{1-x}Cr_xO_3$

Autor: Gundakaram, R, Arulraj, Anthony, Vanitha, PV, Rao, CNR, Gayathri, N, Raychaudhuri, AK, Cheetham, AK

Publikováno v: IndraStra Global.

Magnetic and electrical properties of oxides of the formula $LnMn_{1-x}Cr_xO_3$ (Ln= rare earth) have been investigated to understand the importance of the $Mn^{3+}-O-Cr^{3+}$ superexchange interactions, in contrast to the $Ln_{1-x}A_xMnO_3$ (A= diva

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=issn23813652::120ede3c34153ee8895c3406a96f0c3c
https://igi.indrastra.com/items/show/205020

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Unusual Field Dependence of the Resistivity and Magnetoresistance in $Nd_{0.5}Ca{0.5}MnO_3$

Autor: Mahendiran, R, Mahesh, R, Gundakaram, R, Raychaudhuri, AK, Rao, CNR

Publikováno v: IndraStra Global.

An unusually large positive magnetoresistance (MR) is found in the compound $Nd_{0.5}Ca_{0.5}MnO_3$ at low temperatures (T< 50K). The positive MR is seen when the magneticfield is first applied and it collapses at higher fields leading to a large neg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=issn23813652::7da0526600ccbb240c33c4ede7de98f4
https://igi.indrastra.com/items/show/204869

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