Spin inhomogeneities at the interface and inverted hysteresis loop in 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>La</mml:mi><mml:mrow><mml:mn>0.7</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mi>Sr</mml:mi><mml:mrow><mml:mn>0.3</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mi>MnO</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:mo>/</mml:mo><mml:msub><mml:mi>SrTiO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>

Ghising, Pramod; Samantaray, B.; Hossain, Zakir

doi:10.1103/physrevb.101.024408

Cited by 19 publications

(11 citation statements)

References 29 publications

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“…Additionally, we noted that the exchange bias |H EB | is almost equal to the coercivity |H des C | or |H asc C | for the inverted hysteresis loop at the same temperature. Therefore, the previously reported exchange bias (Maity et al, 2017;Ghising et al, 2020)) may also be caused by the remanence of superconducting magnet.…”

Section: Resultsmentioning

confidence: 92%

“…The coercivity is the reverse magnetic field to make the remanence value zero. Unlike common hysteresis loop with a counter clockwise cycle, the inverted hysteresis loop with negative remanence has a clockwise cycle and has been observed in many magnetic systems (Takanashi et al, 1993;Aharoni, 1994;Oshea and Alsharif, 1994;Ohkoshi et al, 2001;Wu et al, 2001;Kim et al, 2006;Demirtas et al, 2007;Van Tho et al, 2008;Ziese et al, 2010;Demirci et al, 2020;Ghising et al, 2020;Soldatov et al, 2020;Kumar et al, 2021) over the past decades.…”

Section: Introductionmentioning

confidence: 99%

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Inverted Hysteresis Loops in the Fe73.5Cu1Nb3Si13.5B9 Alloy With Small Coercivity

2021

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The phenomenon of inverted hysteresis loop has been observed in many materials for the past decades. However, the physical origin of the inverted hysteresis loop has long been debated. Here, we report the completely inverted hysteresis loop with a clockwise cycle in the soft-magnetic nanocrystalline Fe73.5Cu1Nb3Si13.5B9 alloy and amorphous Fe73.5Cu1Nb3Si13.5B9 alloy at room temperature. The negative remanence and positive coercivity were observed in the descending branch of magnetization curve when the scan field range was above 1 KOe. By comparing the results with that of the standard Pd sample, we found that the net coercivities of the nanocrystalline Fe73.5Cu1Nb3Si13.5B9 alloy and standard Pd sample are almost equal for the different scanning field ranges. Therefore, it is confirmed that the phenomenon of completely inverted hysteresis loop is caused by the remanence of superconducting magnet rather than the structural inhomogeneity effects. Our results suggest that special care should be taken during the measurement of hysteresis loops using MPMS 3, especially for the materials with small coercivity.

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Section: Resultsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Inverted Hysteresis Loops in the Fe73.5Cu1Nb3Si13.5B9 Alloy With Small Coercivity

2021

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“…The FMR measurement and the extracted value of ∆4πM ef f reflect inhomogeneous distribution of 4πM ef f in YIG-GdIG bilayer system. The argument of Bloch domain-wall-like spiral arrangement of moments is conceivable, as this arrangement between the adjacent layers lowers the exchange interaction energy [27]. To further substantiate the pres-ence of an interfacial AFM exchange coupling leading to spin inhomogeneity at YIG-GdIG interface, we performed in-plane φ H variation of H r on a relatively thin YIG film (∼ 100 nm with growth conditions leading to the formation of a GdIG interfacial layer [13]).…”

Section: B Cavity Fmrmentioning

confidence: 99%

“…3(a) is not so appreciable as the film is 200 nm thick, a very weak unidirectional anisotropy trend is visible, suggesting an AFM exchange coupling between the interface and YIG. It has been shown that the large inhomogeneous 4πM ef f is a direct consequence of the AFM exchange coupling at the interface of LSMO and a growth induced interfacial layer [27]. The YIG thin film system due to the presence of a hard ferrimagnetic GdIG interfacial layer possesses AFM exchange coupling [11][12][13].…”

Section: B Cavity Fmrmentioning

confidence: 99%

Damping in yttrium iron garnet film with an interface

Kumar,

Samantaray,

Das

et al. 2021

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We report strong damping enhancement in a 200 nm thick yttrium iron garnet (YIG) film due to spin inhomogeneity at the interface. The growth-induced thin interfacial gadolinium iron garnet (GdIG) layer antiferromagnetically (AFM) exchange couples with the rest of the YIG layer. The out-of-plane angular variation of ferromagnetic resonance (FMR) linewidth ∆H reflects a large inhomogeneous distribution of effective magnetization ∆4πM ef f due to the presence of an exchange springlike moments arrangement in YIG. We probe the spin inhomogeneity at the YIG-GdIG interface by performing an in-plane angular variation of resonance field Hr, leading to a unidirectional feature. The large extrinsic ∆4πM ef f contribution, apart from the inherent intrinsic Gilbert contribution, manifests enhanced precessional damping in YIG film.

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“…10 The perovskite manganite containing 3d element exhibits rich physics due to the interaction of chargespin-orbit-lattice dfs, 11,12 such as the Mn 3+ -O-Mn 4+ double-exchange ferromagnetism, [13][14][15][16][17] the Mn 3+ -O-Mn 3+18-23 or Mn 4+ -O-Mn 4+24-28 super-exchange antiferromagnetism, the Jahn-teller (J-T) distortion caused by the interaction between the e g electrons in Mn 3+ ions and the lattice [29][30][31] . Due to the approximate charge-spin-orbit-lattice interaction energy, just a perturbation, such as a slight change in composition (doping), 32,33 stress or chemical pressure (equivalent electron doping), [34][35][36][37][38][39][40] external stimulation (magnetic field/ electric field/ pressure), [41][42][43][44] can cause the significant changes in properties. For example, the colossal magnetoresistance (MR) effect and metal-insulator transition (MIT) induced by the magnetic field, the pressure induced the reduction in resistivity and MIT 41 and the changes in electric/ magnetic properties or phase separation caused by stress/ composition inhomogeneity.…”

Section: Introductionmentioning

confidence: 99%

Magnetic properties of La_0.7Sr_0.3MnO₃ under the pressure and the transport property under the magnetic field

et al. 2020

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Polycrystalline La 0.7 Sr 0.3 MnO 3 sample (LSMO) was synthesized by the solid phase reaction; it exhibits the paramagnetic-ferromagnetic transition at T c = 362 K at the ambient pressure; it is paramagnetic metallic state above T c and the ferromagnetic metallic state below T c. It was observed that the pressure effect depends on the temperature range: (a) In the paramagnetic region, the magnetization M hardly changes with the pressure P, that is, ΔM≈0. There exist the antiferromagnetic (AFM) coupled ferromagnetic clusters in the paramagnetic region, and the pressure enhances the AFM coupling. (b) In the temperature range around T c , the pressure increases M, that is, ΔM > 0, with the concomitant increase in T c ; the average pressure coefficient dT c /dP is 5.40 K/GPa at P = .74 GPa, much smaller than 15.47 and 15.90 K/GPa for La 0.7 Ca 0.3 MnO 3 and La 0.9 Ca 0.1 MnO 3 , respectively, due to the different distortion degree of MnO 6 octahedra in Ca and Sr doped manganites. (c) In the temperature region below T c , the pressure reduces M, that is, ΔM < 0. M is determined by the competition between the Mn 3+-O-Mn 4+ double exchange and the interparticle dipolar interaction. The pressure enhances the interparticle dipolar interaction, leading to a significant decrease in magnetization. The resistivity of LSMO exhibits the metallic behavior in the temperature range of 5 K~370 K; it decreases as the applied magnetic field H increases from 0 to 7 T, that is, the magnetoresistance effect which is more significant around T c. The fitting to the low-temperature resistivity shows that the applied magnetic field reduces the scattering from the grain boundary, electron, phonon, and magnon, especially reduces the electron-electron scattering. K E Y W O R D S double exchange, Jahn-Teller distortion, La 0.7 Sr 0.3 MnO 3 , magnetic properties, pressure How to cite this article: Zhang X, Han Y, Kan X, et al. Magnetic properties of La 0.7 Sr 0.3 MnO 3 under the pressure and the transport property under the magnetic field.

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Spin inhomogeneities at the interface and inverted hysteresis loop in La0.7Sr0.3MnO3/SrTiO3

Cited by 19 publications

References 29 publications

Inverted Hysteresis Loops in the Fe73.5Cu1Nb3Si13.5B9 Alloy With Small Coercivity

Inverted Hysteresis Loops in the Fe73.5Cu1Nb3Si13.5B9 Alloy With Small Coercivity

Damping in yttrium iron garnet film with an interface

Magnetic properties of La_0.7Sr_0.3MnO₃ under the pressure and the transport property under the magnetic field

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Spin inhomogeneities at the interface and inverted hysteresis loop in La0.7Sr0.3MnO3/SrTiO3

Cited by 19 publications

References 29 publications

Inverted Hysteresis Loops in the Fe73.5Cu1Nb3Si13.5B9 Alloy With Small Coercivity

Inverted Hysteresis Loops in the Fe73.5Cu1Nb3Si13.5B9 Alloy With Small Coercivity

Damping in yttrium iron garnet film with an interface

Magnetic properties of La0.7Sr0.3MnO3 under the pressure and the transport property under the magnetic field

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Product

Resources

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Magnetic properties of La_0.7Sr_0.3MnO₃ under the pressure and the transport property under the magnetic field