Direct visualization of first-order magnetic transition in La<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mrow><mml:mn>5</mml:mn><mml:mo>/</mml:mo><mml:mn>8</mml:mn><mml:mo>−</mml:mo><mml:mi>y</mml:mi></mml:mrow></mml:msub></mml:math>Pr<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mi>y</mml:mi></mml:msub></mml:math>Ca<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:ms

Rawat, R.; Kushwaha, Pallavi; Mishra, Dileep Kumar; Sathe, Vasant

doi:10.1103/physrevb.87.064412

Cited by 34 publications

(22 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…remanent MR after field cycling and virgin curve lying outside the envelope curve in isothermal M-H are similar to that observed in systems with kinetically arrested first order transition [25,26] e.g. colossal magnetoresistance materials [27,28,29,30], intermetallics [31,32,33], shape memory alloys [34,35,36]. The kinetic arrest of first order transition in these systems result in a glass like magnetic state at low temperatures.…”

Section: Introductionsupporting

confidence: 58%

“…Particularly, the 2 T FCC and FCW curve appears to be similar to that observed for Pd doped FeRh in the presence of 6 T showing a broad gradual but incomplete transition in FCC and relatively sharp transition in FCW [43]. Such asymmetry in cooling and warming curves has also been seen in LPCMO thin film on mesoscopic length scale [30]. Figure 2[a] to [c] shows isothermal MR measurement at various temperatures.…”

Section: Fig 1[a]mentioning

confidence: 60%

See 1 more Smart Citation

Evidence of kinetic arrest in Se doped CoS2

Mishra

Rawat

2016

Solid State Communications

Self Cite

View full text Add to dashboard Cite

Abstract. A systematic study of thermomagnetic irreversibility CoS 1.76 Se 0.24 has been carried out. Our study shows that the resistivity at low temperature can be tuned by cooling in different magnetic fields and the critical field required for paramagnetic (PM) to ferromagnetic (FM) transition varies non-monotonically with temperature. The field induced PM to FM transition results in giant positive magnetoresistance (MR) of about 160% at 5 K. Measurements under CHUF (cooling and heating in unequal magnetic field) protocol show reentrant transition on warming under higher magnetic field (than that applied during cooling). It indicates that the glass like behaviour in this system can be explained in the framework of the kinetic arrest of first order transition. Among the growing list of diverse system showing glass like arrested magnetic states, the present system is the first example where, kinetic arrest is observed for a disordered (here PM) to ordered (here FM) first order transition.

show abstract

Section: Introductionsupporting

confidence: 58%

Section: Fig 1[a]mentioning

confidence: 60%

Evidence of kinetic arrest in Se doped CoS2

Mishra

Rawat

2016

Solid State Communications

Self Cite

View full text Add to dashboard Cite

show abstract

“…The observation of two values indicates the presence of two different transport mechanisms or the presence of magnetic in-homogeneity. 58 Magnetization measurements support the later possibility. Figure 5(a) shows the temperature dependence of magneto-resistance (MR) at 8 T. MR shows a peak at $180 K with positive value of 10%.…”

mentioning

confidence: 53%

Large dielectric permittivity and possible correlation between magnetic and dielectric properties in bulk BaFeO3−δ

Sagdeo

Gautam

Sagdeo

et al. 2014

Applied Physics Letters

View full text Add to dashboard Cite

We report structural, magnetic, and dielectric properties of oxygen deficient hexagonal BaFeO3−δ. A large dielectric permittivity comparable to that of other semiconducting oxides is observed in BaFeO3−δ. Magnetization measurements indicate magnetic inhomogeneity and the system shows a paramagnetic to antiferromagnetic transition at ∼160 K. Remarkably, the temperature, at which paramagnetic to antiferromagnetic transition occurs, around this temperature, a huge drop in the dissipation factor takes place and resistivity shoots up; this indicates the possible correlation among magnetic and dielectric properties. First principle simulations reveal that some of these behaviors may be explained in terms of many body electron correlation effect in the presence of oxygen vacancy present in BaFeO3−δ indicating its importance in both fundamental science as well as in applications.

show abstract

“…Although the dynamics of PS state may be inferred from the transports through a manganite nanowire [13], but these measurements are limited to a narrow temperature range with sufficient conductivity. To date, the PS state with distinct physical properties has been visualized by various microscopy techniques such as scanning tunneling microscopy [14], electron microscopy [15], photoemission spectroscopy [16], magnetic force microscopy [17,18], and recently near-field microwave impedance microscopy (MIM) [19]. However, most of these studies focus on the static phase-separation.…”

Section: Page 2 Of 12mentioning

confidence: 99%

Direct Imaging of Dynamic Glassy Behavior in a Strained Manganite Film

et al. 2015

View full text Add to dashboard Cite

Complex many-body interaction in perovskite manganites gives rise to a strong competition between ferromagnetic metallic and charge ordered phases with nanoscale electronic inhomogeneity and glassy behaviors. Investigating this glassy state requires high resolution imaging techniques with sufficient sensitivity and stability. Here, we present the results of a near-field microwave microscope imaging on the strain driven glassy state in a manganite film. The high contrast between the two electrically distinct phases allows direct visualization of the phase separation. The low temperature microscopic configurations differ upon cooling with different thermal histories. At sufficiently high temperatures, we observe switching between the two phases in either direction. The dynamic switching, however, stops below the glass transition temperature. Compared with the magnetization data, the phase separation was microscopically frozen, while spin relaxation was found in a short period of time.

show abstract

Direct visualization of first-order magnetic transition in La5/8−yPryCa

Cited by 34 publications

References 28 publications

Evidence of kinetic arrest in Se doped CoS2

Evidence of kinetic arrest in Se doped CoS2

Large dielectric permittivity and possible correlation between magnetic and dielectric properties in bulk BaFeO3−δ

Direct Imaging of Dynamic Glassy Behavior in a Strained Manganite Film

Contact Info

Product

Resources

About