Research output: Contribution to journal › Article › peer-review
Structural and antiferromagnetic characterization of noncollinear D019 Mn3Ge polycrystalline film. / Ogasawara, Takahiro; Kim, Jun-Young; Ando, Yasuo; Hirohata, Atsufumi.
In: Journal of Magnetism and Magnetic Materials, Vol. 473, 09.10.2018, p. 7-11.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Structural and antiferromagnetic characterization of noncollinear D019 Mn3Ge polycrystalline film
AU - Ogasawara, Takahiro
AU - Kim, Jun-Young
AU - Ando, Yasuo
AU - Hirohata, Atsufumi
N1 - © 2018 The Authors. Published by Elsevier B.V.
PY - 2018/10/9
Y1 - 2018/10/9
N2 - Distorted Heusler compound of D019 Mn3Ge polycrystalline films were studied in terms of their crystalline structures and antiferromagnetic behavior by varyingannealing temperature and Mn-Ge composition. Although low temperature growth for 30 nm Mn3Ge showed no diffraction peaks in X-ray diffraction patterns, hightemperature growth over 773 K with Mn-rich composition is found to promote the (0001) orientation of D019 Mn3Ge which resulted in the emergence of an exchangebias effect in Co0.6Fe0.4 ferromagnetic layer at 120 K. The exchange bias field of 12 Oe in Mn3.16Ge film grown at 773 K were improved to 61 Oe by enriching Mncomposition to Mn3.97Ge. The average blocking temperature was measured to be at 150 K which is not as high as its reported Néel temperature of 390 K in the bulkstate, however, further improvements are expected by doping additional transition elements.
AB - Distorted Heusler compound of D019 Mn3Ge polycrystalline films were studied in terms of their crystalline structures and antiferromagnetic behavior by varyingannealing temperature and Mn-Ge composition. Although low temperature growth for 30 nm Mn3Ge showed no diffraction peaks in X-ray diffraction patterns, hightemperature growth over 773 K with Mn-rich composition is found to promote the (0001) orientation of D019 Mn3Ge which resulted in the emergence of an exchangebias effect in Co0.6Fe0.4 ferromagnetic layer at 120 K. The exchange bias field of 12 Oe in Mn3.16Ge film grown at 773 K were improved to 61 Oe by enriching Mncomposition to Mn3.97Ge. The average blocking temperature was measured to be at 150 K which is not as high as its reported Néel temperature of 390 K in the bulkstate, however, further improvements are expected by doping additional transition elements.
U2 - 10.1016/j.jmmm.2018.10.035
DO - 10.1016/j.jmmm.2018.10.035
M3 - Article
VL - 473
SP - 7
EP - 11
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
ER -