Tuning magnetic frustration of nanomagnets in triangular-lattice geometry

Xianglin Ke; Jie Li; Sheng Zhang; Nisoli, Cristiano; Crespi, Vincent H.; Schiffer, Peter
December 2008
Applied Physics Letters;12/22/2008, Vol. 93 Issue 25, p252504
Academic Journal
We study the configuration of magnetic moments on triangular lattices of single-domain ferromagnetic islands, examining the consequences of magnetostatic interactions in this frustrated geometry. By varying the island-island distance along one direction, we are able to tune the ratios of different interactions between neighboring islands, resulting in a corresponding variation in the local correlations between the island moments. Unlike other artificial frustrated magnets, this lattice geometry displays regions of ordered moment orientation, possibly resulting from a higher degree of anisotropy leading to a reduced level of frustration.


Related Articles

  • Calculations of the Central Magnetization Coefficients of Cylindrical Ferromagnetic Rods during Magnet Saturation. Zembekov, N. S.; Zakharov, V. A.; Zakharov, A. V.; Russkikh, I. T. // Russian Physics Journal;Apr2005, Vol. 48 Issue 4, p387 

    Calculates the central magnetization coefficients of cylindrical ferromagnetic rods during magnet saturation. Magnetization and demagnetization coefficients of magnetic bodies; Demagnetization coefficients that depend primarily on the shape and relative size of the sample; Implications on physics.

  • Spiral-Logarithmic Structures in a Heisenberg Ferromagnet. Gutshabash, E. Sh. // JETP Letters;3/25/2001, Vol. 73 Issue 6, p279 

    Spiral-logarithmic structure is suggested as a stationary solution of a modified equation for the Heisenberg model, and the single- and N-soliton solutions are constructed on this base. � 2001 MAIK �Nauka / Interperiodica�.

  • Remanent States of Small Ferromagnetic Cylinder. Ternovsky, V.; Luk’yanchuk, B.; Wang, J. P. // JETP Letters;6/25/2001, Vol. 73 Issue 12, p661 

    The internal magnetic structures of a cylinder are computed without prior assumption of axial symmetry. A three-dimensional magnetostatic solution is presented. A detailed distribution of the magnetization is obtained through numerical integration of the Landau–Lifshitz equation with the...

  • Magnetostatics of curling in a finite cylinder. Aharoni, Amikam // Journal of Applied Physics;7/1/1990, Vol. 68 Issue 1, p255 

    Deals with a study which calculated the magnetostatic self energy for the magnetization curling mode in a finite cylinder. Description of a model for the magnetization curling mode in a ferromagnetic cylinder; Information on magnetostatic energy; Methodology of the study; Results and discussion.

  • Magnetic Configurations in the Region of a Nanocontact between Ferromagnetic Bars. Savchenko, L. L.; Zvezdin, A. K.; Popkov, A. F.; Zvezdin, K. A. // Physics of the Solid State;Aug2001, Vol. 43 Issue 8, p1509 

    A numerical solution to the Landau-Lifshitz and magnetostatics equations is used to study the residual magnetic configurations as functions of magnetic and geometrical parameters in the region of a magnetic nanocontact between oppositely magnetized ferromagnetic electrodes in the form of bulk...

  • Influence of barrier overoxidation and annealing on the inelastic spin-dependent tunneling in AlOx-based junctions. Dimopoulos, T.; Henry, Y.; Da Costa, V.; Tiusa, C.; Ounadjela, K. // Journal of Applied Physics;6/1/2004, Vol. 95 Issue 11, p6936 

    The present work reports on the inelastic, spin-dependent tunneling in magnetic junctions with AlOx barrier and Co50Fe50 ferromagnetic (FM) electrodes. The identification of the transport inelastic channels is possible through their distinctive temperature dependencies. For the observed...

  • Magnetic vortex core reversal by excitation with short bursts of an alternating field. Van Waeyenberge, B.; Puzic, A.; Stoll, H.; Chou, K. W.; Tyliszczak, T.; Hertel, R.; Fähnle, M.; Brückl, H.; Rott, K.; Reiss, G.; Neudecker, I.; Weiss, D.; Back, C. H.; Schütz, G. // Nature;11/23/2006, Vol. 444 Issue 7118, p461 

    The vortex state, characterized by a curling magnetization, is one of the equilibrium configurations of soft magnetic materials and occurs in thin ferromagnetic square and disk-shaped elements of micrometre size and below. The interplay between the magnetostatic and the exchange energy favours...

  • Thickness dependence of ferromagnetic- and metal-insulator transition in thin EuO films. Müller, Martina; Miao, Guo-Xing; Moodera, Jagadeesh S. // Journal of Applied Physics;Apr2009, Vol. 105 Issue 7, p07C917 

    We have studied the thickness dependence of the magnetic and transport properties of thin EuO films in the range of 10–60 Å. The ferromagnetic phase transition shows a systematic dependence of the critical temperature Tc with decreasing EuO film thickness. This behavior has been...

  • Micromagnetic simulation of ferromagnetic part-spherical particles. Boardman, Richard P.; Fangohr, Hans; Cox, Simon J.; Goncharov, Alexander V.; Zhukov, Alexander A.; de Groot, Peter A. J. // Journal of Applied Physics;6/1/2004, Vol. 95 Issue 11, p7037 

    The paramagnetic size limit for current magnetic storage media, particularly in sputtered grain storage, is being approached rapidly. To further increase media storage density, patterned media can be used which only need a single grain to store one bit of data. Chemical self-assembly techniques...


Read the Article


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

Try another library?
Sign out of this library

Other Topics