Professor Roy Chantrell, BSc, PhD (University of Wales), FInstP

Contact details

Mail:
 Department of Physics
University of York
Heslington
York
YO10 5DD
U.K.
Tel:
 +44 (0)1904 432253
Fax:
 +44 (0)1904 432284
E-mail:
 rc502@york.ac.uk
Room:
 P/A004

Research Group

  • Dr Denise Hinzke
  • Mr Richard Evans
  • Mr Serdal Karakurt

Recent Publications

R YANES, O CHUBYKALO-FESENKO, H KACHKACHI, DA GARANIN, R EVANS AND RW CHANTRELL
Effective anisotropies and energy barriers of magnetic nanoparticles with Neel surface anisotropy
Phys. Rev. B 76 064416 (2007) (13 pages)

TR GAO, DZ YANG, SM ZHOU, R CHANTRELL, P ASSELIN, J DU AND XS WU
Hysteretic behavior of angular dependence of exchange bias in FeNi/FeMn bilayers
Phys. Rev. Lett. 99 057201 (2007) (4 pages)

S KARAKURT , RW CHANTRELL AND U NOWAK
A model of damping due to spin-lattice interaction
J. Magn. Magn. Mater. 316 E280-E282 (2007) (3 pages)

F DORFBAUER, R EVANS, M KIRSCHNER, O CHUBYKALO-FESENKO, R CHANTRELL AND T SCHREFL
Effects of surface anisotropy on the energy barrier in cobalt-silver core-shell nanoparticles
J. Magn. Magn. Mater. 316 E791-E794 (2007) (4 pages)

R EVANS, F DORFBAUER, O MYRASOV, O CHUBYKALO-FESENKO, T SCHREFL AND R CHANTRELL
The effects of surface coating on the structural and magnetic properties of CoAg core-shell nanoparticles
IEEE Trans. Magn. 43 3106-3108 (2007) (3 pages)

S LEPADATU , J WU, C BUNCE, X ZOU, D NIU, YB XU, R CHANTRELL AND GP JU
Ultrafast optically induced spin dynamics in patterned single crystal Fe dot arrays
J. Appl. Phys. 101 09C111 (2007) (3 pages)

D CHOO, RW CHANTRELL, R LAMBERTON, A JOHNSTON AND K O'GRADY
A model of the magnetic properties of coupled ferromagnetic/antiferromagnetic bilayers
J. Appl. Phys. 101 09E521 (2007) (3 pages)

JD DUTSON, C HUERRICH, G VALLEJO-FERNANDEZ, LE FERNANDEZ-OUTON, G YI, S MAO, RW CHANTRELL AND K O'GRADY
Bulk and interfacial effects in exchange bias systems
J. Phys. D-Appl. Phys. 40 1293-1299 (2007) (7 pages)

D HINZKE, U NOWAK, RW CHANTRELL AND ON MRYASOV
Orientation and temperature dependence of domain wall properties in FePt
Appl. Phys. Lett. 90 082507 (2007) (3 pages)

GP JU, B LU, RJM VAN DE VEERDONK, XW WU, TJ KLEMMER, H ZHOU, R CHANTRELL, A SUNDER, P ASSELIN, Y KUBOTA AND D WELLER
Determination of the Anisotropy field distribution in perpendicular media and its correlation with microstructure and recording
IEEE Trans. Magn. 43 627-632 (2007) (6 pages)

X.W. WU, P. ASSELIN, R.J.M. VEERDONK, AND R.W. CHANTRELL.
Evaluation of 45 degrees method in characterizing the anisotropy of the perpendicular media.
J. Magn. Magn. Mater. 309, 139-143 (2007). [ external link ]

J.J. JIN, D. M. MCKIRDY, J.J. MILES, AND R.W. CHANTRELL.
Simulations of ultra-fast precessional switching of AFC thin film storage media.
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS 13, 149-152 (2007).

B. YANG, M. ASTA, O.N. MRYASOV, T.J. KLEMMER, AND R.W. CHANTRELL.
The nature of A1-L1(0) ordering transitions in alloy nanoparticles, A Monte Carlo study(vol 54, pg 4201 (2006).
Acta Materiala 54, 5335-5335 (2006). [ external link ]

B. YANG, M. ASTA, O.N. MRYASOV, T.J. KLEMMER, AND R.W. CHANTRELL.
The nature of A1-L1(0) ordering transitions in alloy nanoparticles, A Monte Carlo study.
Acta Materiala 54, 4201-4211 (2006). [ external link ]

O. CHUBYKALO-FESENKO, K. GUSLIENKO, T.J. KLEMMER, X.W. WU, R.W. CHANTRELL, AND D. WELLER.
A computational and experimental study of exchange coupling in FePt self-organized magnetic arrays.
Physica B-Condensed Matter 382, 235-244 (2006). [ external link ]

K.C. SCHUERMANN, J.D. DUTSON, S.Z. WU, S.D. HARKNESS, B. VALCU, H.J. RICHTER, R.W. CHANTRELL, AND K. O'GRADY.
Exchange-coupling effects in perpendicular composite materials.
J. Appl. Phys. 99, 08Q904 (2006). [ external link ]

F.G. SANCHEZ, O. CHUBYKALO-FESENKO, O. MRYASOV, AND R.W. CHANTRELL.
Multiscale modelling of hysteresis in FePt/FeRh bilayer.
Physica B-Condensed Matter 372, 328-331 (2006). [ external link ]

C. VERDES, R.W. CHANTRELL, A. SATOH, J.W. HARRELL, AND D. NIKLES.
Self-organisation, orientation and magnetic properties of FePt nanoparticles arrays.
J. Magn. Magn. Mater. 304, 27-31 (2006). [ external link ]

R. EVANS, U. NOWAK, F. DORFBAUER, T. SCHREFL, O. MRYASOV, R.W. CHANTRELL, AND G. GROCHOLA.
The influence of shape and structure on the Curie temperature of Fe and Co nanoparticles.
J. Appl. Phys. 99, 08G703 (2006). [ external link ]

F. GARCIA-SANCHEZ, O. CHUBYKALO-FESENKO, O.N. MRYASOV, AND R.W. CHANTRELL.
Multiscale models of hard/soft composite media.
J. Magn. Magn. Mater. 303, 282-286 (2006). [ external link ]

O. CHUBYKALO-FESENKO, U. NOWAK, R.W. CHANTRELL, AND D. GARANIN.
Dynamic approach for micromagnetics close to the Curie temperature.
Phys. Rev. B 74, 094436 (2006). [ external link ]

G. JU, H. ZHOU, R.W. CHANTRELL, B. LU, AND D. WELLER.
Direct probe of anisotropy field dispersion in perpendicular media.
J. Appl. Phys. 99, 083902 (2006). [ external link ]

JW HARRELL, S KANG, Z JIA, DE NIKLES, R CHANTRELL AND A SATOH
Model for the easy-axis alignment of chemically synthesized L1(0) FePt nanoparticles
Appl. Phys. Lett. 87 202508 (2005) (3 pages)

U. NOWAK, O. N. MRYASOV, R. WIESER, K. GUSLIENKO, AND R. W. CHANTRELL.
Spin dynamics of magnetic nanoparticles, Beyond Brown's theory.
Phys. Rev. B 72, 172410 (2005). [ external link ]

A. REBEI, W. N. G. HITCHON, AND R. W. CHANTRELL.
Spin currents in ferromagnets.
Phys. Lett. A 346, 371-377 (2005).

O. CHUBYKALO-FESENKO AND R. W. CHANTRELL.
Modeling of long-time thermal magnetization decay in interacting granular magnetic materials.
IEEE Trans. On Magnetics 41, 3103-3105 (2005).

F. GARCIA-SANCHEZ, O. CHUBYKALO-FESENKO, O. MRYASOV, R. W. CHANTRELL, AND K. Y.
Guslienko.
Exchange spring structures and coercivity reduction in FePt/FeRh bilayers, A comparison of multiscale and micromagnetic calculations.
Applied Phys. Lett. 87, 122501 (2005).

B. YANG, M. ASTA, O. N. MRYASOV, T. J. KLEMMER, AND R. W. CHANTRELL.
Equilibrium Monte Carlo simulations of A1-L1(0) ordering in FePt nanoparticles.
Scripta Materialia 53, 417-422 (2005).

F. GARCIA-SANCHEZ, O. CHUBYKALO-FESENKO, O. N. MRYASOV, R. W. CHANTRELL, AND K. Y. GUSLIENKO.
Multiscale versus micromagnetic calculations of the switching field reduction in FePt/FeRh bilayers with perpendicular exchange spring.
J. Applied Phys. 97, 10J101 (2005).

O. CHUBYKALO-FESENKO AND R. W. CHANTRELL.
Multidimensional energy barrier distributions of interacting magnetic particles evaluated at different magnetization states.
J. Applied Phys. 97, 10J315 (2005).

V. G. VOZNYUK, A. MISRA, W. D. DOYLE, P. B. VISSCHER, AND R. W. CHANTRELL.
Angular dispersion of the anisotropy in perpendicular media.
J. Applied Phys. 97, 10N508 (2005).

C. VERDES, J. AHNER, P. M. JONES, N. SHUKLA, R. W. CHANTRELL, AND D. WELLER.
Studies of the self-ordering process in FePt self- ordered magnetic array media.
Applied Phys. Lett. 86, 263106 (2005).

K. Y. GUSLIENKO, W. SCHOLZ, R. W. CHANTRELL, AND V. NOVOSAD.
Vortex-state oscillations in soft magnetic cylindrical dots.
Phys. Rev. B 71, 144407 (2005). [ external link ]

O. N. MRYASOV, U. NOWAK, K. Y. GUSLIENKO, AND R. W. CHANTRELL.
Temperature-dependent magnetic properties of FePt, Effective spin Hamiltonian model.
Europhysics Lett. 69, 805-811 (2005).

E. D. BOERNER, O. CHUBYKALO-FESENKO, O. N. MRYASOV, R. W. CHANTRELL, AND O. HEINONEN.
Moving toward an atomistic reader model.
IEEE Trans. On Magnetics 41, 936-940 (2005).

O. A. CHUBYKALO-FESENKO, F. G. SANCHEZ, AND R. W. CHANTRELL.
for acceleration of thermal switching dynamics of magnetic moments.
IEEE Trans. On Magnetics 40, 2140-2142 (2004).

E. D. BOERNER, K. Z. GAO, AND R. W. CHANTRELL.
Effect of damping on the time variation of fields produced by a small pole tip with a soft under layer.
IEEE Trans. On Magnetics 40, 2371-2373 (2004).

J. D. BURTON, R. W. CHANTRELL, and others (8).
Field-controlled domain-wall resistance in magnetic nanojunctions.
Applied Phys. Lett. 85, 251-253 (2004).

K. Y. GUSLIENKO, O. CHUBYKALO, J. D. HANNAY, AND R. W. CHANTRELL.
Consistency of thermal activation model based on the stochastic Landau-Lifshitz equation and classical spin- wave description.
J. Magnetism Magnetic Materials 272-76, 251-253 (2004).

X. W. WU, C. LIU, L. LI, P. JONES, R. W. CHANTRELL, AND D. WELLER.
Nonmagnetic shell in surfactant-coated FePt nanoparticles.
J. Applied Phys. 95, 6810-6812 (2004).

O. A. CHUBYKALO-FESENKO AND R. W. CHANTRELL.
Numerical evaluation of energy barriers and magnetic relaxation in interacting nanostructured magnetic systems.
Physica B-Condensed Matter 343, 189-194 (2004).

P. R. BISSELL, M. CERCHEZ, L. STOLERIU, R. W. CHANTRELL, AND A. STANCU.
The use of generalized Delta M plots in the magnetic characterization of particulate media.
J. Magnetism Magnetic Materials 266, 1-7 (2003).

O. CHUBYKALO, R. SMIRNOV-RUEDA, J. M. GONZALEZ, M. A. WONGSAM, R. W. CHANTRELL, AND U. NOWAK.
Brownian dynamics approach to interacting magnetic moments.
J. Magnetism Magnetic Materials 266, 28-35 (2003).

W. SCHOLZ, R. W. CHANTRELL, and others (7).
Transition from single-domain to vortex state in soft magnetic cylindrical nanodots.
J. Magnetism Magnetic Materials 266, 155-163 (2003).

S. WANG, S. S. KANG, J. W. HARRELL, X. W. WU, AND R. W. CHANTRELL.
Coercivity ratio and anisotropy distribution in chemically synthesized L1(0)FePt nanoparticle systems.
Phys. Rev. B 68, 104413 (2003). [ external link ]

K. Y. GUSLIENKO, R. W. CHANTRELL, AND A. N. SLAVIN.
Dipolar localization of quantized spin-wave modes in thin rectangular magnetic elements.
Phys. Rev. B 68, 024422 (2003). [ external link ]

J. J. MILES, D. M. MCKIRDY, R. W. CHANTRELL, AND R. WOOD.
Parametric optimization for terabit perpendicular recording.
IEEE Trans. On Magnetics 39, 1876-1890 (2003).

H. J. ZHOU, G. P. JU, R. W. CHANTRELL, AND D. WELLER.
Theory of rotational processes in perpendicular media and application to anisotropy measurement.
IEEE Trans. On Magnetics 39, 1902-1907 (2003).

X. W. WU, R. J. M. VANDEVEERDONK, R. W. CHANTRELL, AND D. WELLER.
Delta M study of perpendicular recording media.
J. Applied Phys. 93, 6760-6762 (2003).

G. N. KAKAZEI, R. W. CHANTRELL, and others (10).
In-plane and out-of-plane uniaxial anisotropies in rectangular arrays of circular dots studied by ferromagnetic resonance.
J. Applied Phys. 93, 8418-8420 (2003).

X. W. WU, K. Y. GUSLIENKO, R. W. CHANTRELL, AND D. WELLER.
Magnetic anisotropy and thermal stability study on FePt nanoparticle assembly.
Applied Phys. Lett. 82, 3475-3477 (2003).

C. G. VERDES, B. R. DIAZ, R. W. CHANTRELL, S. THOMPSON, AND A. STANCU.
Monte Carlo simulations of interaction effects on magnetic viscosity in ferromagnetic granular media.
International J. Applied Electromagnetics Mechanics 13, 251-256 (2001).

O. CHUBYKALO, U. NOWAK, R. SMIRNOV-RUEDA, M. A. WONGSAM, R. W. CHANTRELL, AND J. M. GONZALEZ.
Monte Carlo technique with a quantified time step, Application to the motion of magnetic moments.
Phys. Rev. B 67, 064422 (2003). [ external link ]

P. C. FANNIN, S. W. CHARLES, R. W. CHANTRELL, AND A. T. GIANNITSIS.
Studies of the effect of polarising field and particle interactions on the resonant frequency of magnetic nano- particles in colloidal suspensions.
J. Magnetism Magnetic Materials 252, 65-67 (2002).

M. EL-HILO, K. O'GRADY, AND R. W. CHANTRELL.
Fluctuation fields and reversal mechanisms in granular magnetic systems.
J. Magnetism Magnetic Materials 248, 360-373 (2002).

M. AOSHIMA, A. SATOH, R. W. CHANTRELL, AND G. N. COVERDALE.
Rheological properties and orientational distributions of dilute ferromagnetic spherocylinder particle dispersions Part II. Analysis for the two typical magnetic field directions.
J. Colloid Interface Science 253, 455-464 (2002).

T. J. KLEMMER, R. W. CHANTRELL, and others (10).
Structural studies of L1(0) FePt nanoparticles.
Applied Phys. Lett. 81, 2220-2222 (2002).

P. H. W. RIDLEY, G. W. ROBERTS, AND R. W. CHANTRELL.
Simulation of the micromagnetic behavior of arrays of interacting nanoelements.
J. Applied Phys. 92, 1069-1077 (2002).

O. CHUBYKALO, J. D. HANNAY, M. WONGSAM, R. W. CHANTRELL, AND J. M. GONZALEZ.
Langevin dynamic simulation of spin waves in a micromagnetic model.
Phys. Rev. B 65, 184428 (2002). [ external link ]

C. VERDES, B. RUIZ-DIAZ, S. M. THOMPSON, R. W. CHANTRELL, AND A. STANCU.
Computational model of the magnetic and transport properties of interacting fine particles.
Phys. Rev. B 65, 174417 (2002). [ external link ]

J. J. BLACKWELL, K. O'GRADY, C. VERDES, AND R. W. CHANTRELL.
Cluster demagnetizing effects in particulate dispersions.
J. Applied Phys. 91, 8748-8750 (2002).

H. V. JONES AND R. W. CHANTRELL.
The extraction of features from magnetic force microscopy images using neural network techniques.
J. Applied Phys. 91, 8855-8857 (2002).

R. W. CHANTRELL, D. WELLER, T. J. KLEMMER, S. SUN, AND E. E. FULLERTON.
Model of the magnetic properties of FePt granular media.
J. Applied Phys. 91, 6866-6868 (2002).

A. W. SPARGO, P. H. W. RIDLEY, G. W. ROBERTS, AND R. W. CHANTRELL.
Influences of granular microstructure on the reversal mechanism of Co nanoelements.
J. Applied Phys. 91, 6923-6925 (2002).

W. J. ANTEL, H. LAIDLER, K. O'GRADY, C. VERDES, AND R. W. CHANTRELL.
Determination of activation volumes in thin film media.
J. Applied Phys. 91, 7080-7082 (2002).

M. AOSHIMA, A. SATOH, G. N. COVERDALE, AND R. W. CHANTRELL.
Orientational distributions of a ferromagnetic spherocylinder particle in a simple shear flow - Analysis for a magnetic field parallel to a shear flow direction.
Kagaku Kogaku Ronbunshu 27, 799-805 (2001).

M. AOSHIMA, A. SATOH, G. N. COVERDALE, AND R. W. CHANTRELL.
Orientational distributions of a ferromagnetic spherocylinder particle in a simple shear flow - Analysis for a magnetic field parallel to the angular velocity vector of a shear flow.
Kagaku Kogaku Ronbunshu 27, 528-531 (2001).

T. HUGHES, K. O'GRADY, H. LAIDLER, AND R. W. CHANTRELL.
Thermal activation in exchange biased bilayers.
J. Magnetism Magnetic Materials 235, 329-336 (2001).

C. G. VERDES, B. RUIZ-DIAZ, S. M. THOMPSON, R. W. CHANTRELL, AND A. STANCU.
Model of ferromagnetic resonance in granular magnetic solids.
J. Applied Phys. 89, 7475-7477 (2001).

 

Roy Chantrell

Summary of expertise

  • Magnetic Materials