Ferromagnetic spin-correlations in strained LaCoO3 thin films

Freeland, J. W.; Ma, J. X.; Shi, J.
November 2008
Applied Physics Letters;11/24/2008, Vol. 93 Issue 21, p212501
Academic Journal
We present an element-resolved study of the valence and magnetic properties of LaCoO3 thin films grown via pulsed laser deposition. The Co L edge x-ray absorption shows that ferromagnetic (FM) order arises from a slight hole doping of the system presumably due to nonstoichiometry, which in the bulk system disrupts the low-spin state. However, even though the films are hole doped, the magnetic moments under tensile strain are much larger than the bulk system indicating that the strain can greatly increase the FM fraction observed in the spin-glass regime at low doping.


Related Articles

  • Epitaxial La0.5Sr0.5CoO3 thin films: Structure, magnetism, and transport. Torija, M. A.; Sharma, M.; Fitzsimmons, M. R.; Varela, M.; Leighton, C. // Journal of Applied Physics;Jul2008, Vol. 104 Issue 2, p023901 

    La1-xSrxCoO3 has received considerable attention in bulk form. This is due to interest in the fundamental magnetic properties (spin-state transitions and magnetic phase separation) as well as potential applications in ferroelectric memory and solid-oxide fuel cells. The structure and properties...

  • Enhanced room temperature magnetoresistance and cluster spin glass behavior in Mo doping La0.67Sr0.33MnO3. Chen, L.; He, J. H.; Mei, Y.; Cao, Y. Z.; Liu, B. Q.; Zhu, Z. W.; Xu, Z. A. // Journal of Applied Physics;Jun2009, Vol. 105 Issue 12, p123910-1 

    The structural, magnetic, and transport properties of Mo doping La0.67Sr0.33Mn1-xMoxO3 (x=0–0.04) manganite system have been investigated by x-ray diffraction, scanning electron microscopy, magnetization, and magnetoresistance measurements. The Mo doping in Mn site is found to lower the...

  • Exchange bias and spin glassy behavior in low doped La1-xSrxCoO3 cobaltites. Yuan, Shujuan; Xu, Kun; Li, Zhe; Yu, Liming; Kang, Baojuan; Cao, Shixun // Journal of Applied Physics;May2009, Vol. 105 Issue 9, p093910 

    We present an extensive study of the exchange bias properties and glassy behavior in low-doped La1-xSrxCoO3 cobaltites. The temperature dependences of the dc magnetization and ac susceptibility indicate that the spin glass state exists even at high magnetic fields. The field-cooled magnetic...

  • Reverse-poling effects on charge retention in Pb(Zr,Ti)O[sub 3](001)/LaNiO[sub 3](001) heterostructures. Jo, W.; Kim, D. C.; Hong, J. W. // Applied Physics Letters;1/17/2000, Vol. 76 Issue 3 

    We report charge retention in preferentially c-axis oriented ferroelectric Pb(Zr,Ti)O[sub 3] (PZT) thin films on LaNiO[sub 3] by electrostatic force microscopy. The surface charge density of the PZT films was observed as a function of time in a selected area where a region is single poled and...

  • Profiling of electrical doping concentration in ferroelectrics. Chai, Francis K.; Brews, J.R.; Schrimpf, R. D.; Birnie III, D. P. // Journal of Applied Physics;9/1/1997, Vol. 82 Issue 5, p2517 

    Studies the extraction of doping profiles in ferroelectric thin film capacitors using ferroelectric capacitance-voltage measurements. Electrical doping concentrations; Limitations of the model; Computer simulation results; Delta function and potential distribution.

  • Magnetic glass like arrest in Ca doped GdBaCo2O5.53. Thirumurugan, N.; Amaladass, E. P.; Sundar, C. S.; Bharathi, A. // AIP Conference Proceedings;6/5/2012, Vol. 1447 Issue 1, p1203 

    Magnetic field and temperature dependent magnetization measurements have been carried out for undoped and Ca doped GdBaCo2O5.53 samples using CHUF (Cooling and Heating in Unequal Fields) protocol. The measurements reveal that the kinetically arrested metastable glass like phase persists in the...

  • Electro-optic effect in Ba[sub 1-x]Pb[sub x]TiO[sub 3] films. Fuflyigin, V.; Wang, F.; Jiang, H.; Zhao, J.; Norris, P. // Applied Physics Letters;3/27/2000, Vol. 76 Issue 13 

    High quality Ba[sub 1-x]Pb[sub x]TiO[sub 3] (x=0-0.25) films were grown on R-Al[sub 2]O[sub 3] in a wide thickness range of 0.5-3 μm. Significant improvement of the films' crystallinity and optical quality was observed in the presence of lead oxide for the films prepared at 650-700 °C....

  • Two-dimensional ferroelectric films. Bune, A.V.; Fridkin, V.M.; Ducharme, Stephen; Blinov, L. M.; Palto, S. P.; Sorokin, A. V.; Yudin, S. G.; Zlatkin, A. // Nature;2/26/1998, Vol. 391 Issue 6670, p874 

    Presents research which reported measurements of the ferroelectric transition in crystalline films of a random copolymer of vinylidene fluoride and trifluoroethylene. Value of ultrathin crystalline films; Observations of first-order and second-order ferromagnetic phase transitions;...

  • Interface engineering using ferromagnetic nanoparticles for enhancing pinning in YBa2Cu3O7-δ thin film. Jha, Alok K.; Khare, Neeraj; Pinto, R. // Journal of Applied Physics;Dec2011, Vol. 110 Issue 11, p113920 

    Thin films of YBCO have been deposited on bare and La0.67Sr0.33MnO3 (LSMO) nanoparticle decorated single crystal SrTiO3 (STO) substrates. The effect of ferromagnetic LSMO nanoparticles, present at the substrate/film interface, on the superconducting properties of YBa2Cu3O7-δ (YBCO) thin film...


Read the Article


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

Try another library?
Sign out of this library

Other Topics