Nanostructured thin manganite films in megagauss magnetic field

Balevičius, Saulius; Žurauskienė, N.; Stankevič, Voitech; Kersulis, Skirmantas; Plaušinaitienė, Valentina; Abrutis, A.; Жерлицын, С.; Herrmannsdörfer, T.; Wosnitza, J.; Wolff-Fabris, F.

doi:10.1063/1.4749820

Cited by 33 publications

(33 citation statements)

References 12 publications

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“…Previously, it was demonstrated that the CMR-B-scalar sensors based on the colossal magnetoresistance (CMR) effect in thin manganite films (La1-xSrxMnO3) [13] can be successfully used for the measurement of the pulsed magnetic field distribution in the bore of a coilgun [11] and in the vicinity of railgun rails [14]. However, the sensor's response is not a linear function in respect to the magnetic flux density B.…”

Section: Resultsmentioning

confidence: 99%

Single Pulse Calibration of Magnetic Field Sensors Using Mobile 43 kJ Facility

Grainys

Novickij

Stankevič

et al. 2015

Measurement Science Review

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In this work we present a mobile 43 kJ pulsed magnetic field facility for single pulse calibration of magnetic field sensors. The magnetic field generator is capable of generating magnetic fields up to 40 T with pulse durations in the range of 0.3-2 ms. The high power crowbar circuit is used for the reverse voltage protection and pulse shaping purposes. The structure, the development challenges and the implemented solutions to improve the facility for the calibration of the magnetic field sensors are overviewed. The experimental data of the application of the proposed generator for the calibration of manganite magnetic field sensors are presented.

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Section: Resultsmentioning

confidence: 99%

Single Pulse Calibration of Magnetic Field Sensors Using Mobile 43 kJ Facility

Grainys

Novickij

Stankevič

et al. 2015

Measurement Science Review

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“…Such results could be explained taking into account that the MR of polycrystalline manganite films could be analyzed considering contributions of both crystallites and grain boundaries [1]. In general, at temperatures close to Curie temperature, the magnetoresistance of crystallites having perfect structure, supposed to be higher in comparison with grain boundaries having reduced magnetic order.…”

Section: The Ageing Influence On the Magnetoresistancementioning

confidence: 98%

“…They exhibit very low (less than few %) anisotropy of magnetoresistance (MR) at magnetic flux densities higher than few tesla and the MR of these films does not saturate up to the megagauss limit [1,2]. This property of thin nanostructured La 1 − x Sr x MnO 3 manganite films was successfully used for the design of CMR-B-scalar sensors which can quantitatively measure the magnitude (B) of such magnetic fields in very small volumes.…”

Section: Introductionmentioning

confidence: 97%

“…Thin nanostructured (nanograined polycrystalline) manganite films have demonstrated unique properties of colossal magnetoresistance (CMR) in a wide range of temperatures and magnetic fields [1]. They exhibit very low (less than few %) anisotropy of magnetoresistance (MR) at magnetic flux densities higher than few tesla and the MR of these films does not saturate up to the megagauss limit [1,2].…”

Section: Introductionmentioning

confidence: 99%

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Accelerated ageing effects in nanostructured La0.83Sr0.17MnO3 films

et al. 2015

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“…R ECENTLY, it was demonstrated that nanostructured (nanograined polycrystalline) La 1−x Sr x MnO 3 (LSMO) films which exhibit the colossal magnetoresistance effect (CMR) can be successfully used for the development of CMR-B-scalar sensors [1], [2]. These small-volume sensors allow for measurements of absolute magnitude of magnetic flux density B, in the time scale of milliseconds, during high magnetic field pulses.…”

Section: Introductionmentioning

confidence: 99%

Magnetoresistance and Resistance Relaxation of Nanostructured La-Ca-MnO Films in Pulsed Magnetic Fields

Žurauskienė¹,

Balevičius²,

Pavilonis³

et al. 2014

IEEE Trans. Magn.

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The results of magnetoresistance (MR) and resistance relaxation of nanostructured La 1−x Ca x MnO 3 films, with different composition x grown by metal-organic chemical vapor deposition technique, are presented and compared with the La 0.83 Sr 0.17 MnO 3 films. The MR was investigated in pulsed magnetic fields up to 60 T in the temperature range 1.5-294 K while the relaxation processes were studied in pulsed fields up to 10 T and temperatures in the range of 80-300 K. It was demonstrated that at low temperatures the MR has higher values in the LCMO films in comparison with the LSMO ones, while at room temperatures, the highest MR values are obtained for the LSMO films. The fast (∼100 µs) and slow (∼ms) resistance relaxation processes were observed after the magnetic field pulse was switched off. It was shown that the fast process could be analyzed using the Kolmogorov-Avrami-Fatuzzo model, considering the reorientation of magnetic domains into their equilibrium state, while the slow process-by the Kohlrausch-Williams-Watts model considering the interaction of the magnetic moments in disordered grain boundaries having spin-glass properties. It was concluded that La 1−x Ca x MnO 3 films having a higher sensitivity and lower memory effects and should be favored for the development of fast pulsed magnetic field sensors operating at low temperatures.

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Nanostructured thin manganite films in megagauss magnetic field

Cited by 33 publications

References 12 publications

Single Pulse Calibration of Magnetic Field Sensors Using Mobile 43 kJ Facility

Single Pulse Calibration of Magnetic Field Sensors Using Mobile 43 kJ Facility

Accelerated ageing effects in nanostructured La0.83Sr0.17MnO3 films

Magnetoresistance and Resistance Relaxation of Nanostructured La-Ca-MnO Films in Pulsed Magnetic Fields

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