NDLI: Control and generation of domain walls near magnetic compensation in ferrimagnetic CoTb via applied thermal gradient

Content Provider	IEEE Xplore Digital Library
Author	Tolley, R.D. Liu, T. Hauet, T. Hehn, M. Lengaigne, G. Fullerton, E.E. Mangin, S.
Copyright Year	2015
Description	Author affiliation: Center for Magn. Recording Res., Univ. of California, San Diego, La Jolla, CA, USA (Tolley, R.D.; Fullerton, E.E.) \|\| Inst. Jean Lamour, Univ. de Lorraine, Nancy, France (Liu, T.; Hauet, T.; Hehn, M.; Lengaigne, G.; Mangin, S.)
Abstract	Recently, the manipulation of domain walls using magnetic field [1] spin polarized current [2] electric field [3] and temperature gradient [4] have attracted significant interest. This control of domain wall nucleation and propagation could lead to new advances in the field of data storage [5] and magnetic logic [6]. Here we report on the use of a thermal gradient to nucleate, propagate and annihilate well-defined domain walls. The domain walls are created in lithographically patterned wires of amorphous, ferrimagnetic CoTb alloy thin films. The net magnetization of these films is defined by the competition between the magnetization of the antiferromagnetically coupled Co sublattice and Tb sublattice. For some compositions, there exists a given temperature known as the compensation temperature $(T_{comp}),$ where the net saturation magnetization of the sample is zero due to the equal magnitude and opposite direction of the two competing sublattice moments. Below $T_{comp},$ the net magnetization of the film aligns along the dominant Tb magnetization, while above $T_{comp}$ the direction of the magnetization is controlled by the Co sublattice. By crossing this compensation temperature under applied field, it is possible to change the dominant sublattice - creating a shift in the net magnetization direction of the film.
Starting Page	1
Ending Page	1
File Size	516796
Page Count	1
File Format	PDF
e-ISBN	9781479973224
DOI	10.1109/INTMAG.2015.7157675
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-11
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wires Magnetization Films Temperature Magnetic fields Magnetic domain walls Magnetic domains
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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