TY - JOUR
T1 - Tuning magnetic properties in quasi-two-dimensional ferromagnetic Fe3yGe1xAsxTe2 (0x0.85)
AU - Yuan, Duanduan
AU - Jin, Shifeng
AU - Liu, Ning
AU - Shen, Shijie
AU - Lin, Zhiping
AU - Li, Kunkun
AU - Chen, Xiaolong
N1 - Publisher Copyright:
© 2017 IOP Publishing Ltd.
PY - 2017/3
Y1 - 2017/3
N2 - We report that Fe3GeTe2 can form a wide solid solution by substitution of As for Ge, providing an opportunity to tune the magnetic and electronic properties in this 2D material. The crystal structure, physical properties and electronic structure of iron-deficient solid solution Fe3yGe1xAsxTe2 (0x 0.85) are studied. We found that the Curie temperature can substantially change from 177 K to 33 K and resistivity decreases by about 30% with the arsenic doping x from 0 to 0.85. First principles calculations demonstrate that the elongation of Fe(1)-Fe(1) dumb-bells along c axis is essentially responsible for decreasing the integrated spin density of states below Fermi level and weakening spin polarization, resulting in a decrease of Curie temperature. Our study reveals the magnetism manipulation can be realized via modification of bondlengths in 2D magnetic materials.
AB - We report that Fe3GeTe2 can form a wide solid solution by substitution of As for Ge, providing an opportunity to tune the magnetic and electronic properties in this 2D material. The crystal structure, physical properties and electronic structure of iron-deficient solid solution Fe3yGe1xAsxTe2 (0x 0.85) are studied. We found that the Curie temperature can substantially change from 177 K to 33 K and resistivity decreases by about 30% with the arsenic doping x from 0 to 0.85. First principles calculations demonstrate that the elongation of Fe(1)-Fe(1) dumb-bells along c axis is essentially responsible for decreasing the integrated spin density of states below Fermi level and weakening spin polarization, resulting in a decrease of Curie temperature. Our study reveals the magnetism manipulation can be realized via modification of bondlengths in 2D magnetic materials.
KW - Fe-Fe dumb-bells
KW - Magnetic manipulation
KW - Quasi-two-dimensional
UR - http://www.scopus.com/inward/record.url?scp=85016817297&partnerID=8YFLogxK
U2 - 10.1088/2053-1591/aa63b5
DO - 10.1088/2053-1591/aa63b5
M3 - Article
AN - SCOPUS:85016817297
SN - 2053-1591
VL - 4
JO - Materials Research Express
JF - Materials Research Express
IS - 3
M1 - 036103
ER -