Observation of tunable exchange bias in Sr2YbRuO6

Abstract

The double perovskite compound, Sr 2 YbRuO 6 , displays reversal in the orientation of magnetic moments along with negative magnetization due to an underlying magnetic compensation phenomenon. The exchange bias (EB) field below the compensation temperature could be the usual negative or the positive depending on the initial cooling field. This EB attribute has the potential of getting tuned in a preselected manner, as the positive EB field is seen to crossover from positive to negative value above T comp .

Positive and negative exchange bias effects in the simple perovskite manganite NdMnO3

“…Recently, the exchange bias effect was intensively studied in La 1Àx Pr x CrO 3 and Sr 2 YbRuO 6 , in which both positive and negative exchange bias effects can be observed and are dependent on the cooling field and temperature. 12,13 In these two compounds, the exchange bias effect is different from what appears in bilayer and other interface structures. The coupling between the Pr 3þ magnetic rare earth ions and the Cr 3þ transition metal ions at different atomic sites in the ABO 3 structure determines the properties of the exchange bias effect in La 1Àx Pr x CrO 3 .…”

Negative exchange bias in single-phaseDy1−xNdxCrO3McDannald1, Seehra2, Jain3 2016Phys. Rev. B27050View full textAdd to dashboardCite

“…This is to be expected since Dy O 3 a magnetic reversal is observed upon field cooling due to the anti-alignment of the rare-earth and transition metal sublattices. 13,14 In order to further understand the magnetic behavior of samples in the Dy 1-x Nd x CrO 3 solid-solution, isothermal magnetization measurements were performed for each of the present samples at 100 K ( Figure 6). As noted in our previous work on DyCrO 3 , the measured magnetization can be approximately described as the superposition of a linear contribution and ferromagnetic contribution.…”

“…For example, in the double perovskite Sr 2 YbRuO 6 the H E was thought to arise from the competition between the Dzyaloshinskii-Moriya interaction (DMI) and uniaxial anisotropy. 13 In NdCr 1-x sublattice. 17 The NdCrO 3 does not exhibit magnetic reversal, but the moment of Nd 3+ is thought to oppose the canted moment of the Cr 3+ sublattice.…”

Sign reversal of magnetization and tunable exchange bias field in NdCr1−xFexO3 (x=0.05–0.2)

“…Substitutions on rare earth site using other rare earth elements and on Cr site using other transition elements give rise to interesting properties like magnetization reversal (MR) and exchange bias (EB) phenomena. Even though MR is known to appear in ferrimagnetic (FIM) compounds [7], recently many other compounds such as Sr 2 YbRuO 6 [8], orthochromites [5,[9][10][11][12][13][14][15][16][17][18][19][20][21], orthoferrites [22][23][24], othovanadates [25,26], molecular magnets [27,28] and intermetallic alloys [29,30] are shown to exhibit such behavior. Exchange bias phenomenon has been studied in heterostructure of bilayer/multilayer thin films of AFM/FM, AFM/FIM (ferrimagnetic), AFM/SG (spin glass), etc.…”