Abstract
Polycrystalline thin films of La0.7Ca0.3MnO3 with variable thickness (25nm<δ <200nm) have been obtained by magnetron sputtering on YSZ(100) and Si(100)/YSZ substrates. The influence of modified structure on magnetoresistance (MR) of manganite film has been investigated in the low magnetic field region. Well pronounced MR hysteresis has been registered for the first time for both magnetic field orientations - in-plane and perpendicular to plane direction. Temperature dependence of the hysteresis amplitude and the location of magnetoresistance peak have been found and compared with those of epitaxial films and of artificial grain boundaries. It is worth noting the high value of obtained MR sensitivity of simple single layer film structure at low magnetic field H<250 Oe and a wide temperature range - features in favour of memory application.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Inoue, J. (1998) Magnetic and transport properties of Mn oxides films, J.Phys.D: Appl.Phys.31, 643–648.
Coey, J.M.D., M.Viret, S.von Molnar, (1998) Mixed-Valence Manganites (in press)
Hwang,H.Y., S.-W.Cheong, N.P.Ong, B.Batlogg, (1996) Spin-Polarized Intergrain Tunneling in La2/3Sr1/3O3, Phys. Rev.Lett. 77, 2041–2044.
.Schiffer, P., A.P.Ramirez, W.Bao, S.-W. Cheong, (1995) Low Temperature Magnetoresistance and the Magnetic Phase Diagram of La1-xCaxMnO3, Phys.Rev.Lett., 75, 3336–3339.
Gupta, A., G.Q.Gong, G.Xiao, P.R.Duncombe, P.Lecoeur, P.Trouilloud, Y.Y.Wang, V.P.Dravid, J.Z.Sun, (1996) Grain-boundary effects on the magnetoresistance properties of perovskite manganite films Phys.Rev.B 54, R15629–R15632.
Shreekala, R., M.Rajeswary, K.Ghosh, A.Goyal, J.Y.Gu, C.Kwon, Z. Trajanovic, T.Boettcher, RX.Greene, R.Ramesh, T.Venkatesan, (1997) Effect of crystallinity on the magnetoresistance in perovskite manganese oxide thin films, Appl.Phys.Lett. 71, 282–284.
E.S.Vlakhov, R.A.Chakalov, R.I.Chakalova, K.A.Nenkov, K.Doerr, A.Handstein, K.-H.Mueller (1998) Influence of the substrate on growth and magnetoresistance of La0.7Sr0.3MnO3 thin films deposited by magnetron sputtering, J.Appl.Phys. 83 2152–2157.
Teo B.S., N.D.Mathur, S.P.Isaak, J.E.Evetts, M.G.Blamire (1998) Low-field magnetotransport in La0.7Sr0.3MnO3 films, J.Appl.Phys. 83 7157–7159.
O’Donnell, J., M.Onellion, M.S.Rzchowski, J.N.Eckstein, I.Bozovic, (1997)Low-field magnetoresistance in tetragonal La1-xCax MnO3 films, Phys.Rev. B 55, 5873–5879.
10. Vlakhov, E.S., K.Doerr, K.-H.Mueller, K.A.Nenkov, A.Handstein, R.A.Chakalov, R.T.Chakalova, A.Y.Spasov, (1998) Thickness Dependence of Magnetoresistance in Magnetron Sputtered La0.7Sr0.3MnO3 Thin Films on LaAlO3(100) and YSZ(100) Substrates (in press)
Mathur, N.D., G.Burneil, S.P.Isaac, T.J.Jackson, B.-S. Teo, J.L.MacManus -Driscoll, L.F.Cohen, J.E.Evetts, M.G.Blamire (1997) Large low-field MR in La0.7Sr0.3MnO3 induced by artificial grain boundaries, Nature 387, 266–268.
Steenbeck, K., T.Eick, K.Kirsch, K.O’Donnell, E.Steinbeiβ, (1997) Influence of a 36.8° grain boundaries on the magnetoresistance of La0.8Sr0.2MnO3 single crystal films, Appl.Phys.Lett., 71, 968–970.
Isaak, S.P., N.D.Mathur, J.E.Evets, M.G.Blamire (1998) Magnetoresistance of artificial La0.7Sr0.3MnO3 grain boundaries as a function of misorientation angle, Appl.Phys.Lett. 72 2038–2040.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1999 Springer Science+Business Media Dordrecht
About this paper
Cite this paper
Vlakhov, E.S. et al. (1999). Low-Field Magnetoresistance Hysteresis of Magnetron Sputtered La0.7Ca0.3Mn O3 Thin Films. In: Nedkov, I., Ausloos, M. (eds) Nano-Crystalline and Thin Film Magnetic Oxides. NATO Science Series, vol 72. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4493-3_21
Download citation
DOI: https://doi.org/10.1007/978-94-011-4493-3_21
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-7923-5873-2
Online ISBN: 978-94-011-4493-3
eBook Packages: Springer Book Archive