LuGd: A system exhibiting positive exchange coupling between conduction electrons and localised magnetic moments

1978 ◽  
Vol 49 (3) ◽  
pp. 1440-1442 ◽  
Author(s):  
R. W. Cochrane ◽  
J. O. Ström‐Olsen ◽  
Gwyn Williams
Keyword(s):  
Exchange Coupling ◽  
Magnetic Moments ◽  
Conduction Electrons

scholarly journals Ruderman–Kittel–Kasuya–Yosida-type interfacial Dzyaloshinskii–Moriya interaction in heavy metal/ferromagnet heterostructures

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Taehyun Kim ◽  
In Ho Cha ◽  
Yong Jin Kim ◽  
Gyu Won Kim ◽  
Andrey Stashkevich ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Exchange Coupling ◽  
Spin Orbit Coupling ◽  
Conduction Electrons ◽  
Indirect Exchange ◽  
Metal Atoms ◽  
Technological Potential ◽  
Interfacial Modification ◽  
Coupling Phenomena ◽  
Moriya Interaction

AbstractThe manipulation of magnetization with interfacial modification using various spin-orbit coupling phenomena has been recently revisited due to its scientific and technological potential for next-generation memory devices. Herein, we experimentally and theoretically demonstrate the interfacial Dzyaloshinskii–Moriya interaction characteristics penetrating through a MgO dielectric layer inserted between the Pt and CoFeSiB. The inserted MgO layer seems to function as a chiral exchange interaction mediator of the interfacial Dzyaloshinskii–Moriya interaction from the heavy metal atoms to ferromagnet ones. The potential physical mechanism of the anti-symmetric exchange is based on the tunneling-like behavior of conduction electrons through the semi-conductor-like ultrathin MgO. Such behavior can be correlated with the oscillations of the indirect exchange coupling of the Ruderman–Kittel–Kasuya–Yosida type. From the theoretical demonstration, we could provide approximate estimation and show qualitative trends peculiar to the system under investigation.

scholarly journals Large magnetic moments and anomalous exchange coupling in As-doped Mn clusters

2006 ◽  
Vol 73 (7) ◽  
Author(s):  
Mukul Kabir ◽  
D. G. Kanhere ◽  
Abhijit Mookerjee
Keyword(s):  
Exchange Coupling ◽  
Magnetic Moments

scholarly journals Control of the noncollinear interlayer exchange coupling

2020 ◽  
Vol 6 (48) ◽  
pp. eabd8861
Author(s):  
Zachary R. Nunn ◽  
Claas Abert ◽  
Dieter Suess ◽  
Erol Girt
Keyword(s):  
Exchange Coupling ◽  
Magnetic Moments ◽  
Interlayer Exchange Coupling ◽  
Magnetic Structures ◽  
Spintronic Devices ◽  
Spacer Layer ◽  
Ferromagnetic Layers ◽  
Almost All ◽  
Interlayer Exchange ◽  
Coupling Angle

Interlayer exchange coupling in transition metal multilayers has been intensively studied for more than three decades and is incorporated into almost all spintronic devices. With the current spacer layers, only collinear magnetic alignment can be reliably achieved; however, controlling the coupling angle has the potential to markedly expand the use of interlayer exchange coupling. Here, we show that the coupling angle between the magnetic moments of two ferromagnetic layers can be precisely controlled by inserting a specially designed magnetic metallic spacer layer between them. The coupling angle is controlled solely by the composition of the spacer layer. Moreover, the biquadratic coupling strength, responsible for noncollinear alignment, is larger than that of current materials. These properties allow for the fabrication and study of not yet realized magnetic structures that have the potential to improve existing spintronic devices.

Effect of Hybridization on Exchange Coupling in Magnetic Multilayers

1993 ◽  
Vol 313 ◽  
Author(s):  
J. Mathon ◽  
M.A. Villeret ◽  
J.M. Mander ◽  
D.M. Edwards ◽  
R.B. Muniz
Keyword(s):  
Transition Metal ◽  
Exchange Coupling ◽  
Magnetic Multilayers ◽  
Size Quantization ◽  
Conduction Electrons ◽  
Long Period ◽  
Oscillatory Coupling

ABSTRACTAn earlier theory of the exchange coupling between two ferromagnets separated by a nonmagnetic transition metal spacer was based on size quantization of the electron energies in the spacer. It is now generalized to include the effect of hybridization between the conduction and d bands both in the ferromagnet and in the spacer. The new theory thus unifies the approach based on coupling via d electrons, valid for transition metal spacers, with RKKY-type theories for noble and simple metals which rely on coupling via conduction electrons. The theory is applied to calculate the period and strength of the long-period oscillatory coupling in (001) CO/Cu trilayer.

Absence of Exchange Interaction Between Localized Magnetic Moments and Conduction-Electrons in Magnetic Ions Diluted in Ag-Nanoparticles

2011 ◽  
Vol 11 (3) ◽  
pp. 2126-2131 ◽  
Author(s):  
J. M. Vargas ◽  
W. Iwamoto ◽  
L. M. Holanda ◽  
S. B. Oseroff ◽  
P. G. Pagliuso ◽  
...  
Keyword(s):  
Exchange Interaction ◽  
Ag Nanoparticles ◽  
Magnetic Moments ◽  
Conduction Electrons ◽  
Magnetic Ions

scholarly journals Studies on the electronic structures, exchange coupling and magnetic moments of spin and orbital in the compound SmCo55

2005 ◽  
Vol 54 (4) ◽  
pp. 1814
Author(s):  
Zhang Chang-Wen ◽  
Li Hua ◽  
Dong Jian-Min ◽  
Wang Yong-Juan ◽  
Pan Feng-Chun ◽  
...  
Keyword(s):  
Electronic Structures ◽  
Exchange Coupling ◽  
Magnetic Moments
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