Title: Room-Temperature Ferromagnetic Insulating State in Cation-Ordered Double-Perovskite Sr2Fe1+xRe1–xO6 Films

Journal Article · · Advanced Materials

Ferromagnetic insulators (FMIs) are one of the most important components in developing dissipationless electronic and spintronic devices. However, FMIs are innately rare to find in nature as ferromagnetism generally accompanies metallicity. Here, novel room–temperature FMI films that are epitaxially synthesized by deliberate control of the ratio between two B–site cations in the double perovskite Sr2Fe1+xRe1–xO6 (–0.2 ≤ x ≤ 0.2) are reported. In contrast to the known FM metallic phase in stoichiometric Sr2FeReO6, an FMI state with a high Curie temperature (Tc ≈ 400 K) and a large saturation magnetization (MS ≈ 1.8 µB f.u.–1) is found in highly cation–ordered Fe–rich phases. The stabilization of the FMI state is attributed to the formation of extra Fe3+–Fe3+ and Fe3+–Re6+ bonding states, which originate from the relatively excess Fe ions owing to the deficiency in Re ions. As a result, the emerging FMI state created by controlling cations in the oxide double perovskites opens the door to developing novel oxide quantum materials and spintronic devices.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-06CH11357; AC05-00OR22725
OSTI ID:
1484996
Journal Information:
Advanced Materials, Journal Name: Advanced Materials Journal Issue: 4 Vol. 31; ISSN 0935-9648
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (43)

Strain Control of Oxygen Vacancies in Epitaxial Strontium Cobaltite Films journal January 2016
Dirac Cone Spin Polarization of Graphene by Magnetic Insulator Proximity Effect Probed with Outermost Surface Spin Spectroscopy journal April 2018
New ion beam materials laboratory for materials modification and irradiation effects research journal November 2014
Magnetic Proximity Effect as a Pathway to Spintronic Applications of Topological Insulators journal October 2011
Room-temperature magnetoresistance in an oxide material with an ordered double-perovskite structure journal October 1998
Strain control of oxygen kinetics in the Ruddlesden-Popper oxide La1.85Sr0.15CuO4 journal January 2018
Insights into cationic ordering in Re-based double perovskite oxides journal January 2016
Large room-temperature intergrain magnetoresistance in double perovskite SrFe1−x(Mo or Re)xO3 journal March 1999
Epitaxial thin films of ordered double perovskite Sr2FeMoO6 journal April 1999
Metallic ordered double-perovskite Sr2CrReO6 with maximal Curie temperature of 635 K journal July 2002
Structural, magnetic, and transport properties of high-quality epitaxial Sr2FeMoO6 thin films prepared by pulsed laser deposition journal September 2004
Magnetization of Re-based double perovskites: Noninteger saturation magnetization disclosed journal June 2007
Characterization of rhenium oxide films and their application to liquid crystal cells journal June 2009
Controlled B-site ordering in Sr2CrReO6 double perovskite films by using pulsed laser interval deposition journal December 2010
Quantum computing and single-qubit measurements using the spin-filter effect (invited) journal April 1999
Strain-induced high-temperature perovskite ferromagnetic insulator journal March 2018
Critical features of colossal magnetoresistive manganites journal February 2006
X-ray absorption spectroscopic study on A 2 FeReO 6 double perovskites journal August 2005
Double perovskites with ferromagnetism above room temperature journal December 2006
Electronic structure of double perovskite A 2 FeReO 6 (A = Ba and Ca): interplay between spin–orbit interaction, electron correlation, and lattice distortion journal August 2010
Band structure and optical transitions in LaFeO 3 : theory and experiment journal November 2014
Ferrous iron formation following the co-aggregation of ferric iron and the Alzheimer's disease peptide β-amyloid (1–42) journal June 2014
Magnetic Properties of Cu-Mn Alloys journal June 1957
Indirect Exchange Coupling of Nuclear Magnetic Moments by Conduction Electrons journal October 1954
Controlled-valence properties of La 1 − x Sr x FeO 3 and La 1 − x Sr x MnO 3 studied by soft-x-ray absorption spectroscopy journal August 1992
Intergrain tunneling magnetoresistance in polycrystals of the ordered double perovskite Sr 2 FeReO 6 journal May 1999
Magnetic and electronic properties of a single crystal of ordered double perovskite Sr 2 FeMoO 6 journal January 2000
Epitaxy and magnetotransport of Sr 2 FeMoO 6 thin films journal July 2000
Strong ferromagnetism and weak antiferromagnetism in double perovskites: Sr 2 Fe M O 6 ( M = Mo , W, and Re) journal April 2001
Electronic structure study of double perovskites A 2 FeReO 6 ( A = B a , S r , C a ) and Sr 2 M MoO 6 ( M = C r , M n , F e , C o ) by LSDA and LSDA + U journal September 2001
Metal-insulator transition of ferromagnetic ordered double perovskites:  ( Sr 1 − y Ca y ) 2 FeReO 6 journal March 2002
Impact of cation size on magnetic properties of ( A A ′ ) 2 FeReO 6 double perovskites journal April 2004
Structural and electronic properties of the ordered double perovskites A 2 M ReO 6 ( A =Sr,Ca; M =Mg,Sc,Cr,Mn,Fe,Co,Ni,Zn) journal May 2004
Spin transport in proximity-induced ferromagnetic graphene journal March 2008
Unlocking the potential of half-metallic Sr 2 FeMoO 6 films through controlled stoichiometry and double-perovskite ordering journal January 2011
Fully ordered Sr 2 CrReO 6 epitaxial films: A high-temperature ferrimagnetic semiconductor journal April 2012
Proximity Effects Induced in Graphene by Magnetic Insulators: First-Principles Calculations on Spin Filtering and Exchange-Splitting Gaps journal January 2013
Electronic Structure of Sr 2 FeMoO 6 journal September 2000
Above 400-K robust perpendicular ferromagnetic phase in a topological insulator journal June 2017
Magnetic and Mössbauer Studies of the Ordered Perovskites Sr 2 Fe 1+ x Re 1- x O 6 journal November 1973
Optical Study of Electronic Structure in Perovskite-Type R M O 3 ( R =La, Y; M =Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu) journal July 1995
A Theory of Metallic Ferro- and Antiferromagnetism on Zener's Model journal July 1956
“Stretching” the energy landscape of oxides—Effects on electrocatalysis and diffusion journal February 2014

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