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Magnetic properties of an antiferromagnetic double perovskite oxide Ba2CaReO6, where Re6+ (5d1) ions with large spin-orbit coupling are arranged on the face-centered-cubic lattice, are investigated using pulsed high magnetic field up to 66…

Spin-orbit coupling (SOC) plays a crucial role in magnetic and electronic properties of 5$d$ iridates. In this paper we have experimentally investigated the structural and physical properties of a series of Ir-based double perovskite…

We demonstrate the gate-tunability of the long-range magnetic order in a p-type V-doped WSe2 monolayer using ab initio calculations. We found that at a low V-doping concentration limit, the long-range ferromagnetic order is enhanced by…

材料科学 · 物理学 2020-06-25 Dinh Loc Duong , Seong-Gon Kim , Young Hee Lee

We report a first-principles study of Bi-based 3$d$-5$d$ ordered double perovskite oxides (A$_2$BB$^\prime$O$_6$) with a 3$d$ atom (Fe) at the B-site and 5$d$ atoms (Re,Ir) at the B$^\prime$-site while keeping highly polarizable ions…

材料科学 · 物理学 2019-12-25 Paresh C. Rout , Varadharajan Srinivasan

New double perovskites LaPbMSbO6, where M2+ = Mn2+, Co2+, and Ni2+, were synthesized as polycrystals by an aqueous synthetic route at temperatures below 1000 oC. All samples are monoclinic, space group P21/n, as obtained from Rietveld…

材料科学 · 物理学 2013-03-11 D. G. Franco , R. E. Carbonio , G. Nieva

II-oxide and III-nitride semiconductors doped by nonmagnetic 2p light elements are investigated as potential dilute magnetic semiconductors (DMS). Based on our first-principle calculations, nitrogen doped ZnO, carbon doped ZnO, and carbon…

材料科学 · 物理学 2013-05-29 L. Shen , R. Q. Wu , H. Pan , G. W. Peng , M. Yang , Z. D. Sha , Y. P. Feng

Oxide materials exhibit several novel structural, magnetic, and electronic properties. Their stability under ambient conditions, easy synthesis, and high transition temperatures provide such systems with an ideal ground for realizing…

We report an unusual magnetic ground state in single-crystal, double-perovskite Ba2YIrO6 and Sr doped Ba2YIrO6 with Ir5+(5d4) ions. Long-range magnetic order below 1.7 K is confirmed by DC magnetization, AC magnetic susceptibility and heat…

强关联电子 · 物理学 2017-09-01 J. Terizc , H. Zheng , Feng Ye , H. D. Zhao , P. Schlottmann , L. De Long , G. Cao

The field of double perovskites is now advancing to three magnetic elements on the A, B and B$'$ sites. A series of iridium-based double perovskite compounds, $Ln_2$CoIrO$_6$ ($Ln$ = Eu, Tb, Ho) with three magnetic elements were synthesized…

We explore via density functional calculations the magnetic doping of a topological ferroelectric as an unconventional route to multiferroicity. Vanadium doping of the layered perovskite La$_{2}$Ti$_{2}$O$_{7}$ largely preserves electric…

材料科学 · 物理学 2012-11-22 Marco Scarrozza , Alessio Filippetti , Vincenzo Fiorentini

Recent experimental and theoretical work has shown that the double perovskite NaLaMnWO$_6$ exhibits antiferromagnetic ordering owing to the Mn $d$ states, and computational studies further predict it to exhibit a spontaneous electric…

材料科学 · 物理学 2015-11-18 Joshua Young , Alessandro Stroppa , Silvia Picozzi , James M. Rondinelli

The Mn2Ge2Te6 shows intrinsic ferromagnetic (FM) order, with Curie temperature (Tc) of 316 K. The FM order origins from superexchange interaction between Mn and Te atoms. Mn2Ge2Te6 is half-metal (HM), and spin-\b{eta} electron is a…

化学物理 · 物理学 2022-05-04 Ziyuan An , Ya Su , Shuang Ni , Zhaoyong Guan

Here we show that the B-site cation (Fe/Mo) ordering in the double-perovskite magnetoresistor, Sr2FeMoO6, is controlled by either kinetics or thermal equilibrium depending on the temperature range. In order to enhance the ordering, long…

强关联电子 · 物理学 2007-05-23 T. Shimada , J. Nakamura , T. Motohashi , H. Yamauchi , M. Karppinen

We have synthesized the solid solution, Sr_2Fe_1+xMo_1-xO_6 with -1 <= x <= 0.25, the composition x = 0 corresponding to the well-known double perovskite system Sr2FeMoO6. We report structural and magnetic properties of the above system,…

材料科学 · 物理学 2013-05-29 Dinesh Topwal , D. D. Sarma , H. Kato , Y. Tokura , M. Avignon

We have investigated the electronic and magnetic properties of Co-doped Pr0.8Ca0.2MnO3 thin films using various spectroscopic techniques. X-ray absorption and hard x-ray photoemission spectroscopy revealed that the substituted Co ions are…

We present an interacting model for the electronic and magnetic behavior of a strained $(001)$ atomic layer of Sr$_2$FeMoO$_6,$ which shows room-temperature ferrimagnetism and magnetoresistance with potential spintronics application in the…

强关联电子 · 物理学 2020-07-22 Masahiko G. Yamada , George Jackeli

The quest for Kitaev spin liquids in particular three dimensional solids is long sought goal in condensed matter physics, as these states may give rise to exotic new types of quasi-particle excitations carrying fractional quantum numbers…

强关联电子 · 物理学 2020-01-22 Birender Singh , M. Vogl , S. Wurmehl , S. Aswartham , B. Büchner , Pradeep Kumar

Ordered double perovskite oxides of the general formula, A2BB'O6, have been known for several decades to have interesting electronic and magnetic properties. However, a recent report of a spectacular negative magnetoresistance effect in a…

材料科学 · 物理学 2007-05-23 Sugata Ray , D. D. Sarma

In the present investigation, some novel magnetic behaviors exhibited by double perovskite (DP) Eu2CoMnO6(ECMO) has been reported. XRD analysis of ECMO showed that it has a monoclinic crystal structure (space group P 21/n). A second-order…

材料科学 · 物理学 2019-09-30 Mohd Alam , Arkadeb Pal , Khyati Anand , Prajyoti Singh , Sandip Chatterjee

We report the doping high concentration of tetravalent Ge4+ ions (5 mol % for x = 0.05 to 30 mol % for x = 0.30) at the Fe3+ sites of Fe2-xGexO3 system by chemical coprecipitation route. The charge state of Fe and Ge ions has been modified…

材料科学 · 物理学 2023-09-08 Divya Sherin G T , R. N Bhowmik