Laser deposition from a nanostructured YBaCuO target: Analysis of the plume and growth kinetics of particles on SrTiO3

Huhtinen, H.; Järvinen, J.; Laiho, R.; Paturi, P.; Raittila, J.

doi:10.1063/1.1380990

Cited by 39 publications

(32 citation statements)

References 45 publications

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“…Detailed description of the deposition process can be found in [9]. The -and BZO+n-films were 150 nm thick and the n-films had thicknesses of 50, 150, and 500 nm as measured by atomic force microscopy over an etched stripe in the films.…”

Section: Methodsmentioning

confidence: 99%

Defining $B_{c}$, $B^{\ast}$ and $B_{\phi}$ for YBCO Thin Films

Paturi

Irjala

Abrahamsen

et al. 2009

IEEE Trans. Appl. Supercond.

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Abstract-The accommodation field,, is generally defined to be the field at which the cross over from single vortex pinning to collective pinning occurs. It is determined from magnetization curves as the point where the c plateau ends and it used as a convenient way of comparing the pinning properties of superconducting films. Similarly, the characteristic field, , can be obtained from magneto-optical (MO) images from when the flux fronts meet in the middle of the film. The matching field, , at which there is one vortex line per pinning site, is sometimes thought to be the same as , but in BaZrO 3 -doped YBa 2 Cu 3 O 7 films the calculated is much higher than the observed . can be determined from angular dependent transport measurements. All of the field values correspond to some special case in the flux pinning in the film and relate to c . In this work we have determined , and for different kinds of YBCO films using MO, magnetization and transport measurements to reveal the deeper meaning of the special fields.

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Section: Methodsmentioning

confidence: 99%

Defining $B_{c}$, $B^{\ast}$ and $B_{\phi}$ for YBCO Thin Films

Paturi

Irjala

Abrahamsen

et al. 2009

IEEE Trans. Appl. Supercond.

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“…The superconducting transition temperature ( ∼ 90 K) was determined by resistivity and magnetization measurements, confirming that the YBCO films are near optimally doped. Additional details of their synthesis and characterization can be found elsewhere [15][16][17][18].…”

Section: Methodsmentioning

confidence: 99%

YBCO-based non-volatile ReRAM tested in Low Earth Orbit

Enrique

Barella

Sanca

et al. 2020

J Mater Sci: Mater Electron

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An YBCO-based test structure corresponding to the family of ReRAM devices associated with the valence change mechanism is presented. We have characterized its electrical response previous to its lift-off to a Low Earth Orbit (LEO) using standard electronics and also with the dedicated LabOSat-01 controller. Similar results were obtained in both cases. After about 200 days at LEO on board a small satellite, electrical test started on the memory device using the LabOSat-01 controller. We discuss the results of the first 150 tests, performed along a 433-day time interval in space. The memory device remained operational despite the hostile conditions that involved launching, lift-off vibrations, permanent thermal cycling, and exposure to ionizing radiation, with doses 3 orders of magnitude greater than the usual ones on Earth. The device showed resistive switching and IV characteristics similar to those measured on Earth, although with changes that follow a smooth drift in time. A detailed study of the electrical transport mechanisms, based on previous models that indicate the existence of various conducting mechanisms through the metal-YBCO interface showed that the observed drift can be associated with a local temperature drift at the LabOSat controller, with no clear evidence that allows determining changes in the underlying microscopic factors. These results show the reliability of complex-oxide non-volatile ReRAM-based devices in order to operate under all the hostile conditions encountered in space-borne applications.

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“…The preparation of the targets and films is described elsewhere [13], [14]. All the films were made with the same deposition parameters.…”

Section: Methodsmentioning

confidence: 99%

The Effect of $\hbox{BaZrO}_{3}$ Nanorods on the Normal State Properties and on the Anomaly in the Even Transverse Resistivity in YBCO Thin Films

Palonen

Paturi

2013

IEEE Trans. Appl. Supercond.

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Nanoscale insulating rods grow in YBa 2 Cu 3 O 6+x (YBCO) thin films when they are made by pulsed laser deposition from BaZrO 3 (BZO) doped targets. The longitudinal and transverse resistivities of BZO doped YBCO thin films were measured to investigate the effect of the BZO nanorods as a small-scale inhomogeneity to the anomalies sometimes observed in transverse resistivity. The BZO nanorods were seen to reduce the oxygen content of the films only at high BZO doping levels. Anomalies in the even transverse resistivity in zero field were observed but no systematic correlation with the BZO doping was seen. The origin of the anomaly is attributed to larger scale inhomogeneities present in the samples than the BZO nanorods.Index Terms-Pulsed laser deposition, transverse resistivity, YBa 2 Cu 3 O 56+x6 (YBCO) thin films.

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Laser deposition from a nanostructured YBaCuO target: Analysis of the plume and growth kinetics of particles on SrTiO3

Cited by 39 publications

References 45 publications

Defining $B_{c}$, $B^{\ast}$ and $B_{\phi}$ for YBCO Thin Films

Defining $B_{c}$, $B^{\ast}$ and $B_{\phi}$ for YBCO Thin Films

YBCO-based non-volatile ReRAM tested in Low Earth Orbit

The Effect of $\hbox{BaZrO}_{3}$ Nanorods on the Normal State Properties and on the Anomaly in the Even Transverse Resistivity in YBCO Thin Films

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