Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Philipp, J. B."'
Using low-temperature scanning laser microscopy we directly image electric transport in a magnetoresistive element, a manganite thin film intersected by a grain boundary (GB). Imaging at variable temperature allows reconstruction and comparison of th
Externí odkaz:
http://arxiv.org/abs/cond-mat/0511662
Autor:
Rama, N., Philipp, J. B., Opel, M., Chandrasekaran, K., Sankaranarayanan, V., Gross, R., Rao, M. S. Ramachandra
Publikováno v:
J. Appl. Phys. v. 95, # 11, June 2004 (p.1-3)
We have studied the magnetic properties of Ba_2FeNbO_6 and Ba_2MnNbO_6. it is seen that Ba_2FeNbO_6 is an antiferromagnet with a weak ferromagnetic behaviour at 5K while Ba_2MnNbO_6 shows two magnetic transitions one at 45 K and the other at 12K. Ele
Externí odkaz:
http://arxiv.org/abs/cond-mat/0405557
Autor:
Philipp, J. B., Majewski, P., Alff, L., Erb, A., Gross, R., Graf, T., Brandt, M. S., Simon, J., Walther, T., Mader, W., Topwal, D., Sarma, D. D.
he structural, transport, magnetic and optical properties of the double perovskite $A_2$CrWO$_6$ with $A=\text{Sr, Ba, Ca}$ have been studied. By varying the alkaline earth ion on the $A$ site, the influence of steric effects on the Curie temperature
Externí odkaz:
http://arxiv.org/abs/cond-mat/0306357
Autor:
Philipp, J. B., Reisinger, D., Schonecke, M., Opel, M., Marx, A., Erb, A., Alff, L., Gross, R.
We report on the preparation and characterization of epitaxial thin films of the double-perovskite Sr$_2$CrWO$_6$ by Pulsed Laser Deposition (PLD). On substrates with low lattice mismatch like SrTiO$_3$, epitaxial Sr$_2$CrWO$_6$ films with high cryst
Externí odkaz:
http://arxiv.org/abs/cond-mat/0210014
We have performed a systematic analysis of the low frequency 1/f-noise in single grain boundary junctions in the colossal magnetoresistance material La_{2/3}Ca_{1/3}MnO_{3-delta}. The grain boundary junctions were formed in epitaxial La_{2/3}Ca_{1/3}
Externí odkaz:
http://arxiv.org/abs/cond-mat/0208556
Autor:
Reisinger, D., Blass, B., Klein, J., Philipp, J. B., Schonecke, M., Erb, A., Alff, L., Gross, R.
The use of oxide materials in oxide electronics requires their controlled epitaxial growth. Recently, it was shown that Reflection High Energy Electron Diffraction (RHEED) allows to monitor the growth of oxide thin films even at high oxygen pressure.
Externí odkaz:
http://arxiv.org/abs/cond-mat/0208495
Publikováno v:
Phys. Rev. B 66, 052414 (2002)
Due to the complex interplay of magnetic, structural, electronic, and orbital degrees of freedom, biaxial strain is known to play an essential role in the doped manganites. For coherently strained La(2/3)Ca(1/3)MnO(3) thin films grown on SrTiO(3) sub
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207730
We performed a systematic analysis of the tunneling magnetoresistance (TMR) effect in single grain boundary junctions formed in epitaxial La(2/3)Ca(1/3)MnO(3) films deposited on SrTiO(3) bicrystals. For magnetic fields H applied parallel to the grain
Externí odkaz:
http://arxiv.org/abs/cond-mat/0008105
Publikováno v:
Europhys. Lett. 50, 681 (2000)
We have performed a systematic analysis of the voltage and temperature dependence of the tunneling magnetoresistance (TMR) of grain boundaries (GB) in the manganites. We find a strong decrease of the TMR with increasing voltage and temperature. The d
Externí odkaz:
http://arxiv.org/abs/cond-mat/0005158
Autor:
Rama, N.1,2 rama@physics.iitm.ac.in, Philipp, J. B.3, Opel, M.3, Erb, A.3, Sankaranarayanan, V.2, Gross, R.3, Rao, M. S. Ramachandra1,2 msrrao@iitm.ac.in
Publikováno v:
European Physical Journal B: Condensed Matter. Apr2004, Vol. 38 Issue 4, p553-557. 5p. 1 Chart, 6 Graphs.
