TITLE

Perpendicularizing magnetic anisotropy of full-Heusler Co2FeAl films by cosputtering with terbium

AUTHOR(S)
Li, X. Q.; Xu, X. G.; Zhang, D. L.; Miao, J.; Zhan, Q.; Jalil, M. B. A.; Yu, G. H.; Jiang, Y.
PUB. DATE
April 2010
SOURCE
Applied Physics Letters;4/5/2010, Vol. 96 Issue 14, p142505
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this letter, we fabricated Co2FeAl films with perpendicular-to-plane magnetic anisotropy by cosputtering with terbium (Tb). The as-prepared (Tb+Co2FeAl) films (TCFA) consists of nanocrystalline L21 Co2FeAl and amorphous alloy of Tb(Co, Fe, and Al). The coercivity field (Hc) of the TCFA films is adjustable from 200 to 800 Oe. After annealing, the Hc decreases to 70 Oe. A perpendicularly magnetized spin valve with the TCFA films as free and reference layers shows a current-perpendicular-to-plane magnetoresistance of 1.8% at room temperature. Our result opens a way to fabricate perpendicularly magnetized full-Heusler alloys and makes it possible to realize faster and simple structured magnetic storage bits in the future.
ACCESSION #
49071236

 

Related Articles

  • Partial magnetization reversal using laser annealing in patterned NiFe/FeMn film. Choi, S. D.; Kim, S. W.; Jin, D. H.; Lee, M. S.; Joo, H. W.; Lee, K. A.; Lee, S. S.; Hwang, D. G. // European Physical Journal B -- Condensed Matter;May2005, Vol. 45 Issue 2, p219 

    We have studied local magnetization reversal by laser annealing in exchange biased NiFe/FeMn bilayer. Local magnetization reversal was performed by using the Nd:YAG laser under external magnetic field. When the laser illuminated the patterned film with the power of above 300 mW during 15 min, a...

  • Magnetization reversal in Co/Pt multilayer with weak intergranular coupling. Wang, T.; Pei, W. L.; Fu, Y.; Hasegawa, T.; Washiya, T.; Saito, H.; Ishio, S.; Li, F. S. // Journal of Applied Physics;Dec2007, Vol. 102 Issue 12, p123909 

    A [Co 0.4 nm/Pt 1 nm]8 multilayer with weak intergranular coupling was fabricated. The magnetization states after applying various negative fields along the easy axis were observed using a magnetic force microscope to reveal magnetization reversal behavior. Measurement results showed the...

  • Stress-strain behaviors of <110>-oriented Tb0.3Dy0.7Fe1.95 after magnetic annealing. Changsheng Zhang; Tianyu Ma; Mi Yan // Journal of Materials Research;Jul2010, Vol. 25 Issue 7, p21 

    Compressive stress-strain behaviors in a <110>-oriented crystal Tb0.3Dy0.7Fe1.95 after magnetic annealing have been investigated under a series of quasi-static magnetic fields, attempting to add more insight into the corresponding domain-switching process. The magnetically annealed crystal...

  • High post-annealing stability in [Pt/Co] multilayers. Young Lee, Tae; Su Son, Dong; Ho Lim, Sang; Lee, Seong-Rae // Journal of Applied Physics;Jun2013, Vol. 113 Issue 21, p216102 

    The [Pt/Co] multilayers with a very thin Pt layer of 0.2 nm are presented that exhibit strong perpendicular magnetic anisotropy (PMA) even after annealing up to 500 °C. The observed post-annealing stability is in significant contrast to that previously shown for conventional multilayers with...

  • Separation of perpendicular anisotropy components in dc-magnetron sputtered TbFe amorphous films. Cheng, Shih-Cheng N.; Kryder, Mark H. // Journal of Applied Physics;5/15/1991, Vol. 69 Issue 10, p7202 

    Presents a study which identified different anisotropy components originating from various mechanisms in direct current-magnetron sputtered terbium[sub39]iron[sub70] films. Experimental details; Results and discussion; Conclusion.

  • Low pressure oxygen annealing at high temperature for high quality sputtered YBa[sub 2]Cu[sub 3]O[sub 7-δ] films. Zhai, H. Y.; Zhai, H.Y.; Chu, W. K.; Chu, W.K. // Applied Physics Letters;6/12/2000, Vol. 76 Issue 24 

    We present an improvement in the procedure for fabricating YBa[sub 2]Cu[sub 3]O[sub 7-δ] (YBCO) films by dc sputtering. An in situ anneal was used: (i) between as-deposition temperature T[sub s] and 650 °C, 10 min annealing with oxygen pressure less than 20 Torr and (ii) cooling to room...

  • Rapid thermal annealing study of magnetoresistance and perpendicular anisotropy in magnetic tunnel junctions based on MgO and CoFeB. Wang, Wei-Gang; Hageman, Stephen; Li, Mingen; Huang, Sunxiang; Kou, Xiaoming; Fan, Xin; Xiao, John Q.; Chien, C. L. // Applied Physics Letters;9/5/2011, Vol. 99 Issue 10, p102502 

    The tunneling magnetoresistance and perpendicular magnetic anisotropy in CoFeB(1.1-1.2 nm)/MgO/CoFeB(1.2-1.7 nm) junctions were found to be very sensitively dependent on annealing time. During annealing at a given temperature, decay of magnetoresistance occurs much earlier compared to junctions...

  • Yoke-shaped MgO-barrier magnetic tunnel junction sensors. Chen, J. Y.; Carroll, N.; Feng, J. F.; Coey, J. M. D. // Applied Physics Letters;12/24/2012, Vol. 101 Issue 26, p262402 

    Yoke-shaped sensors based on MgO-barrier magnetic tunnel junctions have been designed, fabricated, and studied; they show a good linear tunneling magnetoresistance (TMR) response. A nearly-perpendicular configuration of two ferromagnetic electrodes was set by two-step annealing together with...

  • Magnetization kinetics in tension and field annealed Fe-based amorphous alloys. Hasegawa, Ryusuke; Takahashi, Kengo; Francoeur, Bruno; Couture, Pierre // Journal of Applied Physics;May2013, Vol. 113 Issue 17, p17A312 

    Magnetization kinetics in tension-annealed and field-annealed amorphous magnetic materials indicates that strain and magnetic fields are equally effective in inducing and relaxing local structural and magnetic anisotropy changes. This observation is based on the thermomagnetic aging of the...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics