TY - JOUR
T1 - Strain and Ferroelectric-Field Effects Co-mediated Magnetism in (011)-CoFe2O4/Pb(Mg1/3Nb2/3)0.7Ti0.3O3Multiferroic Heterostructures
AU - Wang, Ping
AU - Jin, Chao
AU - Zheng, Dongxing
AU - Li, Dong
AU - Gong, Junlu
AU - Li, Peng
AU - Bai, Haili
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: C.J. would like to acknowledge the support of the National Natural Science Foundation of China (11304221 and 11434006) and Natural Science Foundation of Tianjin City (13JCZDJC32800).
PY - 2016/8/29
Y1 - 2016/8/29
N2 - Electric-field mediated magnetism was investigated in CoFe2O4 (CFO, deposited by reactive cosputtering under different Oxygen flow rates) films fabricated on (011)-Pb(Mg1/3Nb2/3)(0.7)Ti0.3O3 (PMN-PT) substrates. Ascribed to the volatile strain effect of PMN-PT, the magnetization of the CFO films decreases along the [01-1] direction whereas it increases along the [100] direction under the electric field, which is attributed to the octahedron distortion in the spinel ferrite. Moreover, a nonvolatile mediation was obtained in the CFO film with low oxygen flow rate (4 sccm), deriving from the ferroelectric-field effect, in which the magnetization is different after removing the positive and negative fields. The cooperation of the two effects produces four different magnetization states in the CFO film with low oxygen flow rate (4 sccm), compared to the only two different states in the CFO film with high oxygen flow rate (10 sccm). It is suggested that the ferroelectric-field effect is related to the oxygen vacancies in CFO films.
AB - Electric-field mediated magnetism was investigated in CoFe2O4 (CFO, deposited by reactive cosputtering under different Oxygen flow rates) films fabricated on (011)-Pb(Mg1/3Nb2/3)(0.7)Ti0.3O3 (PMN-PT) substrates. Ascribed to the volatile strain effect of PMN-PT, the magnetization of the CFO films decreases along the [01-1] direction whereas it increases along the [100] direction under the electric field, which is attributed to the octahedron distortion in the spinel ferrite. Moreover, a nonvolatile mediation was obtained in the CFO film with low oxygen flow rate (4 sccm), deriving from the ferroelectric-field effect, in which the magnetization is different after removing the positive and negative fields. The cooperation of the two effects produces four different magnetization states in the CFO film with low oxygen flow rate (4 sccm), compared to the only two different states in the CFO film with high oxygen flow rate (10 sccm). It is suggested that the ferroelectric-field effect is related to the oxygen vacancies in CFO films.
UR - http://hdl.handle.net/10754/622470
UR - http://pubs.acs.org/doi/abs/10.1021/acsami.6b07584
UR - http://www.scopus.com/inward/record.url?scp=84987761282&partnerID=8YFLogxK
U2 - 10.1021/acsami.6b07584
DO - 10.1021/acsami.6b07584
M3 - Article
C2 - 27540866
SN - 1944-8244
VL - 8
SP - 24198
EP - 24204
JO - ACS Applied Materials & Interfaces
JF - ACS Applied Materials & Interfaces
IS - 36
ER -