Atomistic spin dynamics of the CuMn spin glass alloy (2008)
Skubic, B., Peil, O. E., Hellsvik, J., Nordblad, P., Nordström, L., Eriksson, O.
We demonstrate the use of Langevin spin dynamics for studying dynamical properties of an archetypical spin glass system. Simulations are performed on CuMn (20% Mn) where we study the relaxation that...
Hellsvik, J., Skubic, B., Nordström, L., Sanyal, B., Eriksson, O., Nordblad, P., ...
The dynamical behavior of the magnetism of diluted magnetic semiconductors (DMS) has been investigated by means of atomistic spin dynamics simulations. The conclusions drawn from the study are argued...
Kundu, Asish K., Nordblad, P., Rao, C. N. R.
While La0.7Ba0.3MnO3 is a ferromagnetic metal (TC = 340 K) with longrange ordering, Nd0.7Ba0.3MnO3 shows a transition around 150 K with a small increase in magnetization, but remains an insulator at...
Nam, D. N. H., Dai, N. V., Hong, L. V., Phuc, N. X., Bau, L. V., Nordblad, P., ...
The magnetic lattice of mixed-valence Mn ions in La$_{0.7}$Sr$_{0.3}$MnO$_{3}$ is selectively diluted by partial substitution of Al or Ti for Mn. The ferromagnetic transition temperature...
Selective dilution and magnetic properties of La_{0.7}Sr_{0.3}Mn_{1-x}M'_xO_3 (M' = Al, Ti) (2006)
Nam, D. N. H., Bau, L. V., Khiem, N. V., Dai, N. V., Hong, L. V., Phuc, N. X., ...
The magnetic lattice of mixed-valence Mn ions in La$_{0.7}$Sr$_{0.3}$MnO$_3$ is selectively diluted by partial substitution of Mn by Al or Ti. The ferromagnetic transition temperature and the...
Non-equilibrium Magnetic Properties of Single Crystalline La0.7Ca0.3CoO3 (2005)
Kundu, Asish K., Nordblad, P., Rao, C. N. R.
Magnetic and electric properties of a single crystal of La0.7Ca0.3CoO3 have been experimentally studied. The system attains a ferromagnetic spontaneous moment below 170 K and exhibits a re-entrant...
Anisotropic properties of spherical single crystals of La_1.8Sr_0.2CuO_4-\delta (2004)
Gardchareon, A., Mangkorntong, N., Herisson, D., Nordblad, P.
Single crystals of La_1.8Sr_0.2CuO_4-\delta grown by the travelling solvent floating zone method have been ground to spherical shape for studies of anisotropic supercondcucting properties by SQUID...
Comment on "Memory Effects in an Interacting Magnetic Nanoparticle System" (2003)
Sasaki, M., Jönsson, P. E., Takayama, H., Nordblad, P.
In Phys. Rev. Lett. 91 167206 (2003), Sun et al. study memory effects in an interacting nanoparticle system with specific temperature and field protocols. The authors claim that the observed memory...
Spin Glasses: A Ghost Story (2003)
Jönsson, P. E., Mathieu, R., Nordblad, P., Yoshino, H., Katori, H. Aruga, Ito, A.
Extensive experimental and numerical studies of the non-equilibrium dynamics of spin glasses subjected to temperature or bond perturbations have been performed to investigate chaos and memory effects...
Jönsson, P. E., Yoshino, H., Nordblad, P.
Reply to the Comment by L. Berthier and J.-P. Bouchaud, Phys. Rev. Lett. 90, 059701 (2003), also cond-mat/0209165, on our paper Phys. Rev. Lett. 89, 097201 (2002), also cond-mat/0203444
Strong rejuvenation in a chiral-glass superconductor (2002)
Gardchareon, A., Mathieu, R., Jönsson, P. E., Nordblad, P.
The glassy paramagnetic Meissner phase of a Bi$_2$Sr$_2$CaCu$_2$O$_x$ superconductor ($x$ = 8.18) is investigated by squid magnetometry, using ``dc-memory'' experiments employed earlier to study spin...
Fe/V and Fe/Co (001) superlattices: growth, anisotropy, magnetisation and magnetoresistance (2002)
Nordblad, P., Broddefalk, A., Mathieu, R., Blomqvist, P., Eriksson, O., Wäppling, R.
Some physical properties of bcc Fe/V and Fe/Co (001) superlattices are reviewed. The dependence of the magnetic anisotropy on the in-plane strain introduced by the lattice mismatch between Fe and V...
Jönsson, P. E., Yoshino, H., Nordblad, P.
The aging in a Heisenberg-like spin glass Ag(11 at% Mn) is investigated by measurements of the zero field cooled magnetic relaxation at a constant temperature after small temperature shifts $|\Delta...
Domain growth by isothermal aging in 3d Ising and Heisenberg spin glasses (2001)
Jönsson, P. E., Yoshino, H., Nordblad, P., Katori, H. Aruga, Ito, A.
Non-equilibrium dynamics of three dimensional model spin glasses - the Ising system Fe$_{0.50}$Mn$_{0.50}$TiO$_3$ and the Heisenberg like system Ag(11 at% Mn) - has been investigated by measurements...
Interlayer exchange coupling and giant magnetoresistance in Fe/V (001) superlattices (2001)
Broddefalk, A., Mathieu, R., Nordblad, P., Blomqvist, P., Wäppling, R., Lu, J., ...
Magnetization and magnetoresistivity studies of Fe/V (001) superlattices are reported. The first giant magnetoresistance peak with respect to the vanadium and iron layer thicknesses is investigated....
Mathieu, R., Nordblad, P., Raju, A. R., Rao, C. N. R.
The low temperature phase of single crystals of Nd$_{0.5}$Ca$_{0.5}$MnO$_3$ and Gd$_{0.5}$Ca$_{0.5}$MnO$_3$ manganites is investigated by squid magnetometry. Nd$_{0.5}$Ca$_{0.5}$MnO$_3$ undergoes a...
Jönsson, P. E., Felton, S., Svedlindh, P., Nordblad, P., Hansen, M. F.
The effect of applied magnetic fields on the collective nonequilibrium dynamics of a strongly interacting Fe-C nanoparticle system has been investigated. It is experimentally shown that the magnetic...
Memory and chaos in an Ising spin glass (2001)
Mathieu, R., Jönsson, P. E., Nordblad, P., Katori, H. Aruga, Ito, A.
The non-equilibrium dynamics of the model 3d-Ising spin glass - Fe$_{0.55}$Mn$_{0.45}$TiO$_3$ - has been investigated from the temperature and time dependence of the zero field cooled magnetization...
Critical dynamics of an interacting magnetic nanoparticle system (2000)
Hansen, M. F., Jönsson, P., Nordblad, P., Svedlindh, P.
Effects of dipole-dipole interactions on the magnetic relaxation have been investigated for three Fe-C nanoparticle samples with volume concentrations of 0.06, 5 and 17 vol%. While both the 5 and 17...
Spin glass like transition in a highly concentrated Fe-C nanoparticle system (2000)
Jönsson, P., Svedlindh, P., Nordblad, P., Hansen, M. F.
A highly concentrated (17 vol.%) Fe-C nano-particle system, with a narrow size distribution $d = 5.4\pm 0.4$ nm, has been investigated using magnetic ac susceptibility measurements covering a wide...
Short range ferromagnetism and spin glass state in $\mathrm{Y_{0.7}Ca_{0.3}MnO_{3}}$ (2000)
Mathieu, R., Nordblad, P., Nam, D. N. H., Phuc, N. X., Khiem, N. V.
Dynamic magnetic properties of $\mathrm{Y_{0.7}Ca_{0.3}MnO_{3}}$ are reported. The system appears to attain local ferromagnetic order at $T_{\mathrm{SRF}} \approx 70$ K. Below this temperature the...
Mathieu, R., Svedlindh, P., Nordblad, P.
Magnetic, electric and structural properties of La$_{0.96-y}$Nd$_y$K$_{0.04}$MnO$_{3+\delta}$ with 0$\leq y \leq$0.4 have been studied experimentally. A disordered magnetic state is formed as La is...
Memory and superposition in a spin glass (2000)
Mathieu, R., Jönsson, P., Nam, D. N. H., Nordblad, P.
Non-equilibrium dynamics in a Ag(Mn) spin glass are investigated by measurements of the temperature dependence of the remanent magnetisation. Using specific cooling protocols before recording the...
Non-equilibrium dynamics in an interacting nanoparticle system (1999)
Jönsson, P., Hansen, M. F., Nordblad, P.
Non-equilibrium dynamics in an interacting Fe-C nanoparticle sample, exhibiting a low temperature spin glass like phase, has been studied by low frequency ac-susceptibility and magnetic relaxation...
Dynamics of the diluted Ising antiferromagnet Fe0.31Zn0.69F2 (1999)
Jonason, K., Nordblad, P., Montenegro, F. C.
The diluted Ising antiferromagnet, Fe_{0.31}Zn_{0.69}F_{2}, has been investigated by dynamic susceptibility measurements in zero and and finite applied dc-fields. In zero field, there is a para- to...
Memory interference effects in spin glasses (1999)
Jonason, K., Nordblad, P., Vincent, E., Hammann, J., Bouchaud, J. P.
When a spin glass is cooled down, a memory of the cooling process is imprinted in the spin structure. This memory can be disclosed in a continuous heating measurement of the ac-susceptibility. E.g.,...
Dynamical studies of the response function in a Spin Glass (1999)
Experiments on the time dependence of the response function of a Ag(11 at%Mn) spin glass at a temperature below the zero field spin glass temperature are used to explore the non-equilibrium nature of...
Magnetic Relaxation Phenomena in a CuMn Spin Glass (1998)
Djurberg, C., Jonason, K., Nordblad, P.
Experiments on the temperature and time dependence of the response function and the field cooled magnetisation of a Cu(Mn) spin glass at temperatures below the zero field spin glass temperature are...
Relaxation of the field-cooled magnetization of an Ising spin glass (1998)
Jonsson, T., Jonason, K., Nordblad, P.
The time and temperature dependence of the field-cooled magnetization of a three dimensional Ising spin glass, Fe_{0.5}Mn_{0.5}TiO_{3}, has been investigated. The temperature and cooling rate...
Non-equilibrium dynamics in a 3d spin-glass (1998)
Jonsson, T., Jonason, K., Jonsson, P., Nordblad, P.
Non-equilibrium dynamics in a Ag(11%Mn) spin-glass has been studied by low frequency ac-susceptibility and magnetic relaxation experiments. The results unequivocally show that spin structures that...
Memory and Chaos Effects in Spin Glasses (1998)
Jonason, K., Vincent, E., Hammann, J., Bouchaud, J. P., Nordblad, P.
New low frequency ac susceptibility measurements on two different spin glasses show that cooling/heating the sample at a constant rate yields an essentially reversible (but rate dependent) X(T)...
Campbell, IA, Hammann, J, Kawamura, H, McKenzie, RH, Nordblad, P, Orbach, R, ...
Spin glasses are magnetic systems with conflicting and random interactions between the individual spins. The dynamics of spin glasses, as of structural glasses, reflect their complexity. Both in...
DYNAMIC SCALING IN A SHORT RANGE ISING SPIN GLASS (1988)
Nordblad, P., Lundgren, L., Svedlindh, P., Gunnarsson, K., Aruga, H., Ito, A.
Ac susceptibility data on the Ising spin glass Fe0.5Mn0.5TiO3 are analysed according to power law scaling and activated dynamic scaling. Both models are found to give a good scaling behaviour....
INFLUENCE OF THE AGING PROCESS ON THE MAGNETIC SPECIFIC HEAT IN A CuMn SPIN GLASS (1988)
Nordblad, P., Sandlund, L., Granberg, P., Svedlindh, P., Lundgren, L.
Specific heat measurements of a Cu(0.5at% Mn) spin glass are reported. It is found that the energy flow ƊE due to the aging process during three decades in time at most amounts to 0.05 % of the...
DYNAMIC SCALING IN A SHORT RANGE ISING SPIN GLASS (1988)
Nordblad, P., Lundgren, L., Svedlindh, P., Gunnarsson, K., Aruga, H., Ito, A.
Ac susceptibility data on the Ising spin glass Fe0.5Mn0.5TiO3 are analysed according to power law scaling and activated dynamic scaling. Both models are found to give a good scaling behaviour....
INFLUENCE OF THE AGING PROCESS ON THE MAGNETIC SPECIFIC HEAT IN A CuMn SPIN GLASS (1988)
Nordblad, P., Sandlund, L., Granberg, P., Svedlindh, P., Lundgren, L.
Specific heat measurements of a Cu(0.5at% Mn) spin glass are reported. It is found that the energy flow ƊE due to the aging process during three decades in time at most amounts to 0.05 % of the...
DYNAMIC SCALING IN A SHORT RANGE ISING SPIN GLASS (1988)
Nordblad, P., Lundgren, L., Svedlindh, P., Gunnarsson, K., Aruga, H., Ito, A.
Ac susceptibility data on the Ising spin glass Fe0.5Mn0.5TiO3 are analysed according to power law scaling and activated dynamic scaling. Both models are found to give a good scaling behaviour....
INFLUENCE OF THE AGING PROCESS ON THE MAGNETIC SPECIFIC HEAT IN A CuMn SPIN GLASS (1988)
Nordblad, P., Sandlund, L., Granberg, P., Svedlindh, P., Lundgren, L.
Specific heat measurements of a Cu(0.5at% Mn) spin glass are reported. It is found that the energy flow ƊE due to the aging process during three decades in time at most amounts to 0.05 % of the...
Campbell, IA, Hammann, J, Kawamura, H, McKenzie, RH, Nordblad, P, Orbach, R, ...
Spin glasses are magnetic systems with conflicting and random interactions between the individual spins. The dynamics of spin glasses, as of structural glasses, reflect their complexity. Both in...