Magnetotransport and magnetic properties of La[sub 0.7]MnO[sub 3-δ] and Pr[sub 0.65]Ba[sub 0.05]Ca[sub 0.3]MnO[sub 3-δ] superlattices

Pietambaram, Srinivas V.; Kumar, D.; Singh, Rajiv K.; Lee, Clinton B.
January 2001
Applied Physics Letters;1/8/2001, Vol. 78 Issue 2, p243
Academic Journal
Superlattice structures consisting of La[sub 0.7]MnO[sub 3-δ] (LMO) and Pr[sub 0.65]Ba[sub 0.05]Ca[sub 0.3]MnO[sub 3-δ] (PBCMO) systems, in which the thickness of La[sub 0.7]MnO[sub 3-δ] is fixed and that of Pr[sub 0.65]Ba[sub 0.05]Ca[sub 0.3]MnO[sub 3-δ] varied from 1 to 8 unit cells, have been grown in situ on (100) LaAlO[sub 3] substrates using a pulsed-laser deposition technique. Microstructural characterization carried out on these films shows the presence of characteristic intense satellite peaks, indicating the chemical modulation of the superlattice structure. The insulator-to-metal transition and the magnetoresistance (MR) ratio are found to vary with the number of unit cells. The samples with 1, 2, 5, and 8 unit cells of Pr[sub 0.65]Ba[sub 0.05]Ca[sub 0.3]MnO[sub 3-δ] show transition temperatures of 240, 230, 150, and 160 K and MR ratios of 540%, 592%, 3150%, and 2875%, respectively. We have observed an enhancement of magnetoresistance ratios in the case of superlattices with a thickness of PBCMO greater than 5 unit cells, which may be attributed to a ferromagnetic biasing provided by the LMO layers acting as a ferromagnetic film below its transition temperature. © 2001 American Institute of Physics.


Related Articles

  • Effect of ferromagnetic/antiferromagnetic interfaces on the magnetic properties of La2/3Sr1/3MnO3/Pr2/3Ca1/3MnO3 superlattices. Niebieskikwiat, D.; Hueso, L. E.; Salamon, M. B.; Mathur, N. D. // Journal of Applied Physics;4/15/2006, Vol. 99 Issue 8, p08C903 

    The magnetic properties of a series of ferromagnetic/antiferromagnetic (FM/AFM) superlattices are studied. The multilayers are composed of five La2/3Sr1/3MnO3/Pr2/3Ca1/3MnO3 (LSMO/PCMO) bilayers, grown by pulsed laser deposition using SrTiO3 as the substrate. The evolution of the magnetic moment...

  • SrCuO[sub 2]/(Sr,Ca)CuO[sub 2] superlattice growth by pulsed-laser deposition. Norton, D.P.; Budai, J.D. // Applied Physics Letters;11/28/1994, Vol. 65 Issue 22, p2869 

    Demonstrates the growth of strontium copper dioxide/(strontium, calcium) copper dioxide superlattices structures in the tetragonal, infinite layer crystal structure using conventional pulsed-laser deposition. Observation of superlattice chemical modulation; Indication of x-ray diffraction...

  • Superlattices of Y-Ba-Cu-O/Yy-Pr1-y-Ba-Cu-O grown by pulsed laser deposition. Wu, X. D.; Xi, X. X.; Li, Q.; Inam, A.; Dutta, B.; DiDomenico, L.; Weiss, C.; Martinez, J. A.; Wilkens, B. J.; Schwarz, S. A.; Barner, J. B.; Chang, C. C.; Nazar, L.; Venkatesan, T. // Applied Physics Letters;1/22/1990, Vol. 56 Issue 4, p400 

    Superlattices of YBa2Cu3O7-x/YyPr1-yBa2Cu3O7-x(y=0.8 and 0.0) have been successfully grown in situ on MgO and LaAlO3 by using a multitarget pulsed laser deposition system. Satellite peaks have been observed in x-ray diffraction for the superlattices with modulation wavelengths from about few...

  • Structural ordering and chemical configuration of Ba-based infinite-layer superlattices. Del Vecchio, A.; Mirenghi, L.; De Caro, L.; Tapfer, L.; Aruta, C.; Petrocelli, G.; Balestrino, G. // Journal of Applied Physics;12/1/1997, Vol. 82 Issue 11, p5465 

    Presents a structural and microanalytical study of BaCuO2/CaCuO2 superlattices grown on (001) SrTiO3 substrates by pulsed laser deposition technique. Growth procedure and characterization techniques; Change in the dc resistance of superlattice samples with the increase of time; Fabrication of...

  • Enhanced stability of rocksalt-type AIN phase in AIN/TiN superlattices synthesized by room-temperature pulsed laser deposition. Pankov, V.; Evstigneev, M.; Prince, R. H. // Journal of Applied Physics;10/15/2002, Vol. 92 Issue 8, p4255 

    AlN/TiN superlattice coatings with bilayer thickness, Λ, of 1-20 nm were synthesized by pulsed laser deposition (PLD) at room temperature. Below a critical value of bilayer thickness, Λ[SUBc] ≈ 3 nm, the coatings formed a single-phase NaCl-type structure due to pseudomorphic...

  • Magnetic and transport characteristics of long-period [(LaMnO3)n/(SrMnO3)n]m (n ≥ 3) superlattices. Wang, Geming; Du, Ruifang; Wu, Di; Li, Aidong // Journal of Applied Physics;Nov2012, Vol. 112 Issue 10, p103917 

    Artificial long-period superlattices of antiferromagnetic LaMnO3 and SrMnO3 ([(LaMnO3)n/(SrMnO3)n]m with n ≥ 3) were deposited on SrTiO3 (001) substrates by pulsed laser depositon monitored in situ by reflective high-energy electron diffraction. X-ray diffraction and atomic force...

  • Tailored superlattices containing distinct oxide and oxycarbonate blocks grown by pulsed laser.... Prellier, W.; Mercey, B. // Applied Physics Letters;8/11/1997, Vol. 71 Issue 6, p782 

    Examines the use of pulsed laser deposition technique in the synthesis of copper oxycarbonate superlattices. Components of the infinite layer structure; Accounts on the preparation of the structures; Physical properties of distinct members; Details on the specific deposition parameters; Texture...

  • Dielectric Properties of BaTiO3/SrTiO3 Oxide Superlattice. Lee, Jaichan; Kim, Leejun; Kim, Juho; Kim, Youngsung; Jung, Donggeun // AIP Conference Proceedings;2002, Vol. 626 Issue 1, p178 

    BaTiO[sub 3] (BTO)/SrTiO[sub 3] (STO) artificial superlattices have been fabricated by pulsed laser deposition (PLD) on MgO (100). The stacking periodicity of the BTO/STO each layers in the superlattice was varied from one unit cell to 125 unit cell thickness. The dielectric constant and voltage...

  • Epitaxial growth of (100)CdTe on (100)GaAs induced by pulsed laser evaporation. Dubowski, J. J.; Williams, D. F.; Sewell, P. B.; Norman, P. // Applied Physics Letters;6/1/1985, Vol. 46 Issue 11, p1081 

    Epitaxial (100) CdTe films were grown on the (100) GaAs surface by pulsed laser evaporation. The growth was achieved on substrates held at 260 °C and under a pressure of about 8×10-8 Torr. High-energy electron diffraction, x-ray diffraction, and UV reflectivity studies have shown that...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics