Physics & Astronomy

List of publications

 

24. Magnetic memory in ferromagnetic thin films via exchange coupling

K. Chesnel, E. E. Fullerton, M. J. Carey, J. B. Kortright, and S. D. Kevan

We show the possibility of creating magnetic domain memory in thin ferromagnetic films by inducing spatially varying exchange coupling interactions. We evidence this phenomenon in a perpendicular exchange bias film made of [Co/Pd] IrMn multilayers. Our coherent x-ray magnetic scattering speckle correlation study shows that the film exhibits no memory at room temperature but acquires a very high degree of magnetic memory, above 80% with subsequent field cycling when the sample is zero-field cooled below the blocking temperature of the IrMn layers (T<K) 275.

Phys. Rev. B 78, 132409 (2008)

 

23. Influence of interface exchange coupling in perpendicular anisotropy [Pt/Co]₅₀/TbFe bilayers

 S. Mangin, T. Hauet, P. Fischer, D. H. Kim, J. B. Kortright, K. Chesnel, E. Arenholz, and Eric E. Fullerton

We present the magnetization evolution of perpendicular anisotropy TbFe and [Co/Pt]₅₀ thin films either in direct contact resulting in antiferromagnetic interfacial coupling or separated by a thick decoupling Pt layer. Magnetometry and x-ray magnetic circular dichroism spectroscopy determine the spatially averaged magnetic properties. Resonant magnetic x-ray small-angle scattering and magnetic soft x-ray transmission microscopy probed the domain configurations and correlations in the reversal processes. While the Co/Pt multilayer reverses by domain propagation, the TbFe magnetization reversal was dominated either by coherent magnetization reversal processes or by lateral domain formation depending on the interface exchange coupling. In the presence of lateral domains, dipolar field induced domain replication phenomena were observed.

Phys. Rev. B 78, 024424 (2008)

 

22. Probing complex materials with coherent X-rays

K. Chesnel, J.J. Turner, M. Pfeifer and S.D. Kevan

Appl. Phys. A:  Mater. Sci. Process. 92, 431 (2008)

 

21. Orbital domain dynamics in a doped manganite

J.J. Turner, K.J. Thomas, J.P. Hill, M.A. Pfeifer, K. Chesnel, Y. Tomioka, Y. Tokura and S.D. Kevan

 New J. Phys. 10, 053023 (2008)

 

20. Nucleation weak stripe domains: determination of exchange and thermal anisotropy variations

G. Asti, M. Ghidini, M. Mulazzi, R. Pellicelli, M. Solzi, K. Chesnel and A. Marty

Phys. Rev. B 76, 094414 (2007)

 

19. Combined neutrons and synchrotron studies of magnetic films

S.K. Sinha, S. Roy, M.R. Fitzsimmons, S. Park, M. Dorn, O. Petracic, I.V. Roshchin, Zhi-Pan Li, X.Batlle, R. Morales, A. Misra, X. Zhang, K. Chesnel, J.B. Kortright and I.K. Schuller,

Pramana Journal of Physics 67 (1), 47-55 (2006)

 

18. Depth profile of uncompensated spins in the antiferromagnetic layer of an exchange bias system

S. Roy, M.R. Fitzsimmons, S. Park, M. Dorn, O. Petracic, I.V. Roshchin, Zhi-Pan Li, X.Batlle, R. Morales, A. Misra, X. Zhang, K. Chesnel, J.B. Kortright, S.K. Sinha and Ivan K. Schuller,

Phys. Rev. Lett. 95, 047201 (2005)

 

17. Characterization of FePd bilayers and trilayers using soft x-ray resonant magnetic scattering and micromagnetic modeling

 G. Beutier, G. van der Laan, K. Chesnel, A. Marty, M. Belakhovsky, S. P. Collins, E. Dudzik, J.-C. Toussaint, and B. Gilles.

Phys. Rev. B 71, 184436 (2005)

 

16. Disorder-induced microscopic magnetic memory

M.S. Pierce, C.R. Buechler, L.B. Sorensen, J.J. Turner, S.D. Kevan, E.A. Jagla, J.M. Deutsch, T. Mai, O. Narayan, J.E. Davies, K. Liu, J. Hunter Dunn, K.Chesnel, J.B. Kortright, O. Hellwig, E. E. Fullerton Phys. Rev. Lett. 94, 017202 (2005)

 

15. Interparticle magnetic correlations in dense Co nanoparticle assemblies

J. B. Kortright, O. Hellwig, K. Chesnel, S.Sun,  and E. Fullerton.

Phys. Rev. B 71, 012402 (2005)

 

14. Surface and bulk spin ordering of antiferromagnetic materials: NiO(111)

Antoine Barbier, Cristian Mocuta, Wolfgang Neubeck, Mattia Mulazzi, Flora Yakhou, Karine Chesnel, Alberic Sollier, ChristianVettier and Francois de Bergevin

Phys. Rev. Lett. 93, 257208 (2004)

 

13. Tracking the local  reversal processes in nanostructures by magnetic speckles

K. Chesnel, M. Belakhovsky, G. van der Laan, F. Livet, A. Marty, G. Beutier, S. P. Collins, and A. Haznar. Phys. Rev. B 70, 180402(R) (2004)

 

12. Hysteresis effect in FeP magnetic sripes studied by coherent soft X-ray resonant magnetic scattering  K. Chesnel, G. van der Laan, F. Livet, G. Beutier, A. Marty, M.Belakhovsky, A. Haznar and S.P. Collins  J. Synchrotron Rad. 11, 469-475 (2004) – cover illustration

 

11. Stripe domains nucleation observed by X-ray magnetic scattering: temperature variation of exchange and anisotropy, M. Mulazzi, K. Chesnel, A. Marty, G. Asti, M. Ghidini, M. Solzi, M. Belakhovsky, N. Jaouen, J. M. Tonnerre and F. Sirotti

J. Mag.Magn. Mat., 272 E895 (2004)

 

10. Polarization effects in x-ray resonant magnetic scattering patterns from striped FePd films,

K. Chesnel, M. Belakhovsky, A. Marty, G. Beutier, G. van der Laan, S.P. Collins

Physica B, 345, 148 (2004)

 

9. Soft X-ray Resonant Magnetic Scattering from Fe Pd thin films: study of the micromagnetic components, G. Beutier, K. Chesnel, A. Marty, M. Belakhovsky, J-C. Toussaint, B. Gilles, G. van der Laan, S. Collins, E. Dudzik. Physica B, 345, 143 (2004)

 

8. Magnetic anisotropy of nanostructures FePd studied by soft x-ray resonant magnetic scattering, magnetic force microscopy and micromagnetic modeling

G. van der Laan, K. Chesnel, M. Belakhovsky, A. Marty, F. Livet, S.P. Collins, E. Dudzik, A. Haznar, J.P. Attane, Superlattices Microstruct., 34,107-126 ( 2003).

 

7. Soft-x-ray magnetic speckles from a nanostructured FePd wire

K. Chesnel, M. Belakhovsky, F. Livet, S. P. Collins, G. van der Laan, S. S. Dhesi, J. P. Attané, and A. Marty, Phys. Rev. B 66, 172404 (2002)

 

6. X-ray resonant magnetic scattering study of the magnetic coupling in Co/Pt nanolines and its evolution under magnetic field

K. Chesnel, M. Belakhovsky, S. Landis, J. C. Toussaint, S. P. Collins, G. van der Laan, E. Dudzik, and S. S. Dhesi, Phys. Rev. B 66, 024435 (2002)

 

5. Magnetic coupling in Co/Pt multilayers on etched silicon studied by XRMS,

K. Chesnel, M. Belakhovsky, S. Landis, B. Rodmacq, G. van der Laan, E. Dudzik, S.P. Collins, S.S. Dhesi, 8th Joint MMM-Intermag Conf., IEEE Trans. Magn. 37, 1661 (2001)

 

4. Soft x-ray magnetic scattering from striped magnetic domain structures,

G. van der Laan, E. Dudzik, S.P. Collins, S.S. Dhesi, H.A. Dürr, M. Belakhovsky, K. Chesnel, A. Marty, Y. Samson, B. Gilles, Physica B, 283, 171-174 (2000)

 

3.Influence of perpendicular magnetic anisotropy on closure domains studied with x-ray resonant magnetic scattering E. Dudzik, S.S. Dhesi, H.A. Dürr, S.P. Collins, M.D. Roper, G. van der Laan, K. Chesnel, M. Belakhovsky, A. Marty, Y. Samson

Phys. Rev. B 62, 5779 (2000)

 

2.Inelastic neutron scattering investigation of quenched CsC₆₀ phases

J.L. Sauvajol, K. Chesnel, E.Anglaret

Solid State Comm., 108, 781-785 (1998)

 

1.Vibrationnal properties of polymers and quenched CsC₆₀ phases

J.L. Sauvajol, K. Chesnel, E.Anglaret

J.Chim.Phys., 95, 1441-1444 (1998)