Publications in 2014 (29 papers + 11 submitted)
175. Comprehensive and Macrospin-Based Magnetic Tunnel Junction Spin Torque Oscillator Model – Part II: Verilog-A Model Implementation
T. Chen, A. Eklund, E. Iacocca, S. Rodriguez, G. Malm, J. Åkerman, and A. Rusu
IEEE Trans. Electr. Dev., submitted (2014)
174. Comprehensive and Macrospin-Based Magnetic Tunnel Junction Spin Torque Oscillator Model – Part I: Analytical Model of the MTJ STO
T. Chen, A. Eklund, E. Iacocca, S. Rodriguez, G. Malm, J. Åkerman, and A. Rusu
IEEE Trans. Electr. Dev., submitted (2014)
173. Modulation-mediated unlocking of a parametrically phase-locked spin torque oscillator
P. Dürrenfeld, E. Iacocca, J. Åkerman, and P. K. Muduli,
Appl. Phys. Lett., submitted (2014)
172. CoFeB based spin Hall nano-oscillators
M. Ranjbar, P. Dürrenfeld, M. Haidar, E. Iacocca, M. Balinskiy, T. Q. Le, M. Fazlali, A. Houshang, A. Awad, R. K. Dumas, and J. Åkerman
Appl. Phys. Lett., submitted (2014)
171. Magnetic structure and anisotropy of [Co/Pd]5/NiFe multilayers
L. Tryputen, F. Guo, F. Liu, T. N. Anh Nguyen, S. M. Mohseni, S. Chung, Y. Fang, J. Åkerman, R. D. McMichael, and C. A. Ross
Phys. Rev. B., submitted (2014)
170. Magnetoplasmonic design rules for active magneto-optics
K. Lodewijks, N. Maccaferri, T. Pakizeh, R. K. Dumas, I. Zubritskaya, J. Åkerman, P. Vavassori, and A. Dmitriev,
Nature Communications., submitted (2014)
169. Au/Py magnetoplasmonics for magnetic memory and magnetic field sensors
M. Moradi, S.M. Mohseni, S. Mahmoodi, S. Chung, and J. Åkerman
Adv. Func. Mat., submitted (2014)
168. Exchange coupling in hybrid anisotropy magnetic multilayers quantified by vector magnetometry
C. Morrison, J. J. Miles, T. N. Anh Nguyen, Y. Fang, R. K. Dumas, J. Åkerman, and T. Thomson
J. Appl. Phys., submitted (2014)
167. Thickness and temperature dependent magnetodynamic properties of YIG thin films
M. Haidar, M. Ranjbar, M. Balinskiy, R.K. Dumas, S. Khartsev, J. Åkerman
J. Appl. Phys., submitted (2014)
166. Role of Boron diff usion in CoFeB/MgO magnetic tunnel junctions
S. Mukherjee, R. Knut, S. M. Mohseni, T. N. Anh Nguyen, S. Chung, Q. Tuan Le, J. Åkerman, J. Persson, A. Sahoo, A. Hazarika, B. Pal, S. Thiess, M. Gorgoi, P. S. Anil Kumar, W. Drube, O. Karis, and D. D. Sarma
Physical Review Applied, submitted (2014)
165. Dynamical Magnetic Skyrmions
Y. Zhou, E. Iacocca, A. Awad, R. K. Dumas, F. C. Zhang, and J. Åkerman
Nature Nanotechnology, submitted (2014), see also the related arXiv.org:1404.3281v2
164. [Co/Pd]-CoFeB exchange springs with tunable gap of spin wave excitations
S. Tacchi, T. N. Anh Nguyen, G. Gubbiotti, M. Madami, G. Carlotti, M. G. Pini, A. Rettori, V. Fallahi, R. K. Dumas and Johan Åkerman
J. Phys. D, accepted (2014)
163. Spin Hall Effect-controlled magnetization dynamics in NiMnSb
P. Dürrenfeld, F. Gerhard, M. Ranjbar, C. Gould, L. Molenkamp, and J. Åkerman
J. Appl. Phys., accepted (2014)
162. Effect of sample fatigue on the synchronization behavior of multiple nanocontact spin torque oscillators
A. Houshang, S. R. Sani, P. Dürrenfeld, E. Iacocca, J. Åkerman, and R. K. Dumas
IEEE Magnetics Letters, accepted (2014)
161. Domain structures and magnetization reversal in Co/Pd and CoFeB/Pd multilayers
R. Sbiaa, M. Ranjbar, and J. Åkerman
J. Appl. Phys., accepted (2014)
160. Depth dependent magnetization profiles of hybrid exchange springs
T. N. Anh Nguyen, R. Knut, V. Fallahi, S. Chung, S. M. Mohseni, Q. Tuan Le, O. Karis, S. Peredkov, R. K. Dumas, Casey W. Miller, and Johan Åkerman
Phys. Rev. Appl., accepted (2014), also available as arXiv.org:1312.0878
159. An inductorless wideband balun-LNA for spin torque oscillator-based field sensing
T. Chen, S. Rodriguez, J. Åkerman, and A. Rusu
IEEE ICECS 2014, accepted (2014)
158. Accessing different spin-disordered states using first-order reversal curves
R. K. Dumas, P. K. Greene, D. A. Gilbaert, L. Ye, C.-L. Zha, J. Åkerman, and K. Liu
Phys. Rev. B., accepted (2014)
157. Thick double-biased IrMn/NiFe/IrMn planar Hall effect bridge sensors
F. Qejvanaj, M. Zubair, A. Persson, S. M. Mohseni, S. R. Sani, S. Chung, T. Le, F. Magnusson, and J. Åkerman
IEEE Trans. Magn., accepted (2014)
156. Mode-hopping mechanism generating colored noise in a magnetic tunnel junction based spin torque oscillator
Raghav Sharma, P. Dürrenfeld, E. Iacocca, O. G. Heinonen, J. Åkerman, and P. K. Muduli
Appl. Phys. Lett. 105, 132404 (2014)
155. The 2014 Magnetism Roadmap
Robert L. Stamps, Stephan Breitkreutz, Johan Åkerman, Andrii V. Chumak, YoshiChika Otani, Gerrit E. W. Bauer, Jan-Ulrich Thiele, Martin Bowen, Sara A. Majetich, Mathias Kläui, Ioan Lucian Prejbeanu, Bernard Dieny, Nora M. Dempsey, and Burkard Hillebrands
J. Phys. D: Appl. Phys. 47, 333001 (2014)
154. Spintronics: Channeling spin waves
R. K. Dumas, and J. Åkerman
Nature Nanotechnology 9, 503 (2014)
153. A Highly-Tunable Microwave Oscillator Based on MTJ STO Technology
T. Chen, P. Dürrenfeld, S. Rodriguez, J. Åkerman, and A. Rusu
Microwave and Optical Technology Letters, 56, 2092 (2014).
152. Hysteretic Synchronization in Spin-Torque Nano-Contact Oscillators: a Micromagnetic Study
V. Puliafito, Ye. Pogoryelov, B. Azzerboni, J. Åkerman, and G. Finocchio
IEEE Trans. Nanotechn., 13, 532 (2014).
151. Recent advances in nano-contact spin torque oscillators
Randy K. Dumas, S. R. Sani, S. M. Mohseni, E. Iacocca, Ye. Pogoryelov, P. K. Muduli, S. Chung, P. Dürrenfeld, and Johan Åkerman
IEEE Trans. Magn., 50, 4100107 (2014).
150. Investigation on the tunability of spin configuration inside exchange coupled spring of hard/soft magnets
T. N. Anh Nguyen, V. Fallahi, Q. Tuan Le, S. Chung, S. R. Sani, R. K. Dumas, Casey W. Miller, and J. Åkerman
IEEE Trans. Magn., 50, 2004906 (2014).
149. Effects of a non-absorbing substrate on the magneto-optical Kerr response of plasmonic ferromagnetic nanodisks
Nicolò Maccaferri, Mikko Kataja, Valentina Bonanni, Stefano Bonetti, Zhaleh Pirzadeh, Alexandre Dmitriev, Sebastiaan van Dijken, Johan Åkerman, and Paolo Vavassori
Phys. Status Solidi A 211, 1067–1075 (2014).
148. Effect of nano-confinement on the formation, structural transition and magnetic behavior of mesoporous copper ferrite
N. Najmoddin, A. Beitollahi, M. Muhammed, N. Ansaria, E. Devlinc, S. M. Mohseni, H. Rezajeb, D. Niarchos, J. Åkerman, and M. S. Toprak
Journal of Alloys and Compounds 598, 191 (2014).
147. Magnetic properties of crystalline mesoporous Zn-substituted copper ferrite synthesized under nanoconfinement in silica matrix
N. Najmoddin, A. Beitollahi, E. Devlin, H. Kavas, S. M. Mohseni, J. Åkerman, D. Niarchos, H. Rezaie, M. Muhammed, M. S. Toprak
Microporous and Mesoporous Materials 190, 346 (2014).
146. Spin Transfer Torque Generated Magnetic Droplet Solitons
S. Chung, S. M. Mohseni, S. R. Sani, E. Iacocca, R. K. Dumas, T. N. Anh Nguyen, Ye. Pogoryelov, P. K. Muduli, A. Eklund, M. Hoefer, and J. Åkerman
J. Appl. Phys. 115, 172612 (2014).
145. Dependence of the colored frequency noise in spin torque oscillators on current and magnetic field
Anders J. Eklund, Stefano Bonetti, Sohrab R. Sani, S. Majid Mohseni, Johan Persson, Sunjae Chung, Amir Banuazizi, Ezio Iacocca, M. Östling, Johan Åkerman, and B. Gunnar Malm,
Appl. Phys. Lett., 104, 092405 (2014).
144. Magnetic coupling in asymmetric FeCoV/Ru/FeNi trilayers
Yajun Wei, Somnath Jana, Rimantas Brucas, Yevgen Pogoryelov, Mojtaba Ranjbar, Randy K. Dumas, Peter Warnicke, Johan Åkerman, Dario A. Arena, Olof Karis, and Peter Svedlindh
J. Appl. Phys. 115, 17D129 (2014).
143. Generation linewidth of mode-hopping spin torque oscillators
E. Iacocca, O. Heinonen, P. K. Muduli, and Johan Åkerman
Phys. Rev. B 89, 054402 (2014), also available as arXiv.org:1311.7660
142. Parametric Excitation in a Magnetic Tunnel Junction-Based Spin Torque Oscillator
P. Dürrenfeld, E. Iacocca, Johan Åkerman, and P. K. Muduli.
Appl. Phys. Lett. 104, 052410 (2014)
141. Con fined dissipative droplet solitons in spin-valve nanowires with perpendicular magnetic anisotropy
E. Iacocca, R.K. Dumas, L. Bookman, S.M. Mohseni, S. Chung, M. Hoefer, and J. Åkerman
Phys. Rev. Lett. 112, 047201 (2014), also available as arXiv.org:1308.4812
140. Magnetic droplet solitons in orthogonal nano-contact spin torque oscillators
S.M. Mohseni, S.R. Sani, J. Persson, T. N. Anh Nguyen, S. Chung, Ye. Pogoryelov, P. K. Muduli, E. Iacocca, R. K. Dumas, A. Eklund, M. Hoefer, and Johan Åkerman
Physica B 435, 84 (2014).
139. XRD Cation Distribution and Magnetic Properties of Mesoporous Zn substituted CuFe2O4
Najmeh Najmoddin, Ali Beitollahi, Huseyn Kavas, Majid Mohseni, Hamidreza Rezaie, Johan Åkerman, Muhammet S. Toprak
Ceramics International 40, 3619 (2014).
138. Spin reorientation via antiferromagnetic coupling
M. Ranjbar, R. Sbiaa, R. K. Dumas, J. Åkerman, S. N. Piramanayagam
J. Appl. Phys. 115, 17C103 (2014).
137. Oxidation states and quality of upper interfaces in magnetic tunnel junctions: Oxygen effect on crystallization of interfaces
S. Kamali, C. L. Zha, Y. Yoda, and Johan Åkerman
J. Phys.: Condens. Matter 26, 026004 (2014).
136. Linear Phase Tuning of Spin Torque Oscillators Using In-Plane Microwave Fields
Tui Zeng, Yan Zhou, Johan Åkerman, P. T. Lai, and Philip W. T. Pong
IEEE Trans. Magn. 50, 1400104 (2014).
T. Chen, A. Eklund, E. Iacocca, S. Rodriguez, G. Malm, J. Åkerman, and A. Rusu
IEEE Trans. Electr. Dev., submitted (2014)
174. Comprehensive and Macrospin-Based Magnetic Tunnel Junction Spin Torque Oscillator Model – Part I: Analytical Model of the MTJ STO
T. Chen, A. Eklund, E. Iacocca, S. Rodriguez, G. Malm, J. Åkerman, and A. Rusu
IEEE Trans. Electr. Dev., submitted (2014)
173. Modulation-mediated unlocking of a parametrically phase-locked spin torque oscillator
P. Dürrenfeld, E. Iacocca, J. Åkerman, and P. K. Muduli,
Appl. Phys. Lett., submitted (2014)
172. CoFeB based spin Hall nano-oscillators
M. Ranjbar, P. Dürrenfeld, M. Haidar, E. Iacocca, M. Balinskiy, T. Q. Le, M. Fazlali, A. Houshang, A. Awad, R. K. Dumas, and J. Åkerman
Appl. Phys. Lett., submitted (2014)
171. Magnetic structure and anisotropy of [Co/Pd]5/NiFe multilayers
L. Tryputen, F. Guo, F. Liu, T. N. Anh Nguyen, S. M. Mohseni, S. Chung, Y. Fang, J. Åkerman, R. D. McMichael, and C. A. Ross
Phys. Rev. B., submitted (2014)
170. Magnetoplasmonic design rules for active magneto-optics
K. Lodewijks, N. Maccaferri, T. Pakizeh, R. K. Dumas, I. Zubritskaya, J. Åkerman, P. Vavassori, and A. Dmitriev,
Nature Communications., submitted (2014)
169. Au/Py magnetoplasmonics for magnetic memory and magnetic field sensors
M. Moradi, S.M. Mohseni, S. Mahmoodi, S. Chung, and J. Åkerman
Adv. Func. Mat., submitted (2014)
168. Exchange coupling in hybrid anisotropy magnetic multilayers quantified by vector magnetometry
C. Morrison, J. J. Miles, T. N. Anh Nguyen, Y. Fang, R. K. Dumas, J. Åkerman, and T. Thomson
J. Appl. Phys., submitted (2014)
167. Thickness and temperature dependent magnetodynamic properties of YIG thin films
M. Haidar, M. Ranjbar, M. Balinskiy, R.K. Dumas, S. Khartsev, J. Åkerman
J. Appl. Phys., submitted (2014)
166. Role of Boron diff usion in CoFeB/MgO magnetic tunnel junctions
S. Mukherjee, R. Knut, S. M. Mohseni, T. N. Anh Nguyen, S. Chung, Q. Tuan Le, J. Åkerman, J. Persson, A. Sahoo, A. Hazarika, B. Pal, S. Thiess, M. Gorgoi, P. S. Anil Kumar, W. Drube, O. Karis, and D. D. Sarma
Physical Review Applied, submitted (2014)
165. Dynamical Magnetic Skyrmions
Y. Zhou, E. Iacocca, A. Awad, R. K. Dumas, F. C. Zhang, and J. Åkerman
Nature Nanotechnology, submitted (2014), see also the related arXiv.org:1404.3281v2
164. [Co/Pd]-CoFeB exchange springs with tunable gap of spin wave excitations
S. Tacchi, T. N. Anh Nguyen, G. Gubbiotti, M. Madami, G. Carlotti, M. G. Pini, A. Rettori, V. Fallahi, R. K. Dumas and Johan Åkerman
J. Phys. D, accepted (2014)
163. Spin Hall Effect-controlled magnetization dynamics in NiMnSb
P. Dürrenfeld, F. Gerhard, M. Ranjbar, C. Gould, L. Molenkamp, and J. Åkerman
J. Appl. Phys., accepted (2014)
162. Effect of sample fatigue on the synchronization behavior of multiple nanocontact spin torque oscillators
A. Houshang, S. R. Sani, P. Dürrenfeld, E. Iacocca, J. Åkerman, and R. K. Dumas
IEEE Magnetics Letters, accepted (2014)
161. Domain structures and magnetization reversal in Co/Pd and CoFeB/Pd multilayers
R. Sbiaa, M. Ranjbar, and J. Åkerman
J. Appl. Phys., accepted (2014)
160. Depth dependent magnetization profiles of hybrid exchange springs
T. N. Anh Nguyen, R. Knut, V. Fallahi, S. Chung, S. M. Mohseni, Q. Tuan Le, O. Karis, S. Peredkov, R. K. Dumas, Casey W. Miller, and Johan Åkerman
Phys. Rev. Appl., accepted (2014), also available as arXiv.org:1312.0878
159. An inductorless wideband balun-LNA for spin torque oscillator-based field sensing
T. Chen, S. Rodriguez, J. Åkerman, and A. Rusu
IEEE ICECS 2014, accepted (2014)
158. Accessing different spin-disordered states using first-order reversal curves
R. K. Dumas, P. K. Greene, D. A. Gilbaert, L. Ye, C.-L. Zha, J. Åkerman, and K. Liu
Phys. Rev. B., accepted (2014)
157. Thick double-biased IrMn/NiFe/IrMn planar Hall effect bridge sensors
F. Qejvanaj, M. Zubair, A. Persson, S. M. Mohseni, S. R. Sani, S. Chung, T. Le, F. Magnusson, and J. Åkerman
IEEE Trans. Magn., accepted (2014)
156. Mode-hopping mechanism generating colored noise in a magnetic tunnel junction based spin torque oscillator
Raghav Sharma, P. Dürrenfeld, E. Iacocca, O. G. Heinonen, J. Åkerman, and P. K. Muduli
Appl. Phys. Lett. 105, 132404 (2014)
155. The 2014 Magnetism Roadmap
Robert L. Stamps, Stephan Breitkreutz, Johan Åkerman, Andrii V. Chumak, YoshiChika Otani, Gerrit E. W. Bauer, Jan-Ulrich Thiele, Martin Bowen, Sara A. Majetich, Mathias Kläui, Ioan Lucian Prejbeanu, Bernard Dieny, Nora M. Dempsey, and Burkard Hillebrands
J. Phys. D: Appl. Phys. 47, 333001 (2014)
154. Spintronics: Channeling spin waves
R. K. Dumas, and J. Åkerman
Nature Nanotechnology 9, 503 (2014)
153. A Highly-Tunable Microwave Oscillator Based on MTJ STO Technology
T. Chen, P. Dürrenfeld, S. Rodriguez, J. Åkerman, and A. Rusu
Microwave and Optical Technology Letters, 56, 2092 (2014).
152. Hysteretic Synchronization in Spin-Torque Nano-Contact Oscillators: a Micromagnetic Study
V. Puliafito, Ye. Pogoryelov, B. Azzerboni, J. Åkerman, and G. Finocchio
IEEE Trans. Nanotechn., 13, 532 (2014).
151. Recent advances in nano-contact spin torque oscillators
Randy K. Dumas, S. R. Sani, S. M. Mohseni, E. Iacocca, Ye. Pogoryelov, P. K. Muduli, S. Chung, P. Dürrenfeld, and Johan Åkerman
IEEE Trans. Magn., 50, 4100107 (2014).
150. Investigation on the tunability of spin configuration inside exchange coupled spring of hard/soft magnets
T. N. Anh Nguyen, V. Fallahi, Q. Tuan Le, S. Chung, S. R. Sani, R. K. Dumas, Casey W. Miller, and J. Åkerman
IEEE Trans. Magn., 50, 2004906 (2014).
149. Effects of a non-absorbing substrate on the magneto-optical Kerr response of plasmonic ferromagnetic nanodisks
Nicolò Maccaferri, Mikko Kataja, Valentina Bonanni, Stefano Bonetti, Zhaleh Pirzadeh, Alexandre Dmitriev, Sebastiaan van Dijken, Johan Åkerman, and Paolo Vavassori
Phys. Status Solidi A 211, 1067–1075 (2014).
148. Effect of nano-confinement on the formation, structural transition and magnetic behavior of mesoporous copper ferrite
N. Najmoddin, A. Beitollahi, M. Muhammed, N. Ansaria, E. Devlinc, S. M. Mohseni, H. Rezajeb, D. Niarchos, J. Åkerman, and M. S. Toprak
Journal of Alloys and Compounds 598, 191 (2014).
147. Magnetic properties of crystalline mesoporous Zn-substituted copper ferrite synthesized under nanoconfinement in silica matrix
N. Najmoddin, A. Beitollahi, E. Devlin, H. Kavas, S. M. Mohseni, J. Åkerman, D. Niarchos, H. Rezaie, M. Muhammed, M. S. Toprak
Microporous and Mesoporous Materials 190, 346 (2014).
146. Spin Transfer Torque Generated Magnetic Droplet Solitons
S. Chung, S. M. Mohseni, S. R. Sani, E. Iacocca, R. K. Dumas, T. N. Anh Nguyen, Ye. Pogoryelov, P. K. Muduli, A. Eklund, M. Hoefer, and J. Åkerman
J. Appl. Phys. 115, 172612 (2014).
145. Dependence of the colored frequency noise in spin torque oscillators on current and magnetic field
Anders J. Eklund, Stefano Bonetti, Sohrab R. Sani, S. Majid Mohseni, Johan Persson, Sunjae Chung, Amir Banuazizi, Ezio Iacocca, M. Östling, Johan Åkerman, and B. Gunnar Malm,
Appl. Phys. Lett., 104, 092405 (2014).
144. Magnetic coupling in asymmetric FeCoV/Ru/FeNi trilayers
Yajun Wei, Somnath Jana, Rimantas Brucas, Yevgen Pogoryelov, Mojtaba Ranjbar, Randy K. Dumas, Peter Warnicke, Johan Åkerman, Dario A. Arena, Olof Karis, and Peter Svedlindh
J. Appl. Phys. 115, 17D129 (2014).
143. Generation linewidth of mode-hopping spin torque oscillators
E. Iacocca, O. Heinonen, P. K. Muduli, and Johan Åkerman
Phys. Rev. B 89, 054402 (2014), also available as arXiv.org:1311.7660
142. Parametric Excitation in a Magnetic Tunnel Junction-Based Spin Torque Oscillator
P. Dürrenfeld, E. Iacocca, Johan Åkerman, and P. K. Muduli.
Appl. Phys. Lett. 104, 052410 (2014)
141. Con fined dissipative droplet solitons in spin-valve nanowires with perpendicular magnetic anisotropy
E. Iacocca, R.K. Dumas, L. Bookman, S.M. Mohseni, S. Chung, M. Hoefer, and J. Åkerman
Phys. Rev. Lett. 112, 047201 (2014), also available as arXiv.org:1308.4812
140. Magnetic droplet solitons in orthogonal nano-contact spin torque oscillators
S.M. Mohseni, S.R. Sani, J. Persson, T. N. Anh Nguyen, S. Chung, Ye. Pogoryelov, P. K. Muduli, E. Iacocca, R. K. Dumas, A. Eklund, M. Hoefer, and Johan Åkerman
Physica B 435, 84 (2014).
139. XRD Cation Distribution and Magnetic Properties of Mesoporous Zn substituted CuFe2O4
Najmeh Najmoddin, Ali Beitollahi, Huseyn Kavas, Majid Mohseni, Hamidreza Rezaie, Johan Åkerman, Muhammet S. Toprak
Ceramics International 40, 3619 (2014).
138. Spin reorientation via antiferromagnetic coupling
M. Ranjbar, R. Sbiaa, R. K. Dumas, J. Åkerman, S. N. Piramanayagam
J. Appl. Phys. 115, 17C103 (2014).
137. Oxidation states and quality of upper interfaces in magnetic tunnel junctions: Oxygen effect on crystallization of interfaces
S. Kamali, C. L. Zha, Y. Yoda, and Johan Åkerman
J. Phys.: Condens. Matter 26, 026004 (2014).
136. Linear Phase Tuning of Spin Torque Oscillators Using In-Plane Microwave Fields
Tui Zeng, Yan Zhou, Johan Åkerman, P. T. Lai, and Philip W. T. Pong
IEEE Trans. Magn. 50, 1400104 (2014).