Effect of ion-irradiation-induced disorder on the low-field magnetoresistance of La0.67A0.33MnO3 (A=Sr, Ca)

S. M. Watts, M. Li, S. Wirth, K. H. Dahmen, S. Von Molnár, P. Xiong, A. S. Katz, R. C. Dynes

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We report on a systematic study of the correlation between the disorder produced by ion irradiation and the magnetoresistance (MR) behavior of two doped manganite films: a highly textured La0.67Sr0.33MnO3 film on a (100) LaAlO3 substrate and a film of La0.67Ca0.33MnO3 on a YSZ substrate with a high degree of large-angle grain boundary disorder. The films were grown via metal organic chemical vapor deposition and exposed to irradiation of 200 keV Ne ions. The temperature and field dependence of the resistivity were measured on the same samples at different levels of damage. For the Sr-doped film, the bulk magnetic properties were observed to degrade faster with cumulative damage than transport. For both films at low temperature, a low-field hysteretic MR was either induced or enhanced by ion damage. These effects are discussed in terms of diffusive transport through "granular" magnetically disordered regions.

Original languageEnglish
Pages (from-to)4791-4793
Number of pages3
JournalJournal of Applied Physics
Volume85
Issue number8 II A
Publication statusPublished - 15 Apr 1999
Externally publishedYes

Fingerprint

ion irradiation
disorders
cumulative damage
damage
yttria-stabilized zirconia
metalorganic chemical vapor deposition
ions
temperature distribution
grain boundaries
magnetic properties
temperature dependence
electrical resistivity
irradiation

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Watts, S. M., Li, M., Wirth, S., Dahmen, K. H., Von Molnár, S., Xiong, P., ... Dynes, R. C. (1999). Effect of ion-irradiation-induced disorder on the low-field magnetoresistance of La0.67A0.33MnO3 (A=Sr, Ca). Journal of Applied Physics, 85(8 II A), 4791-4793.

Effect of ion-irradiation-induced disorder on the low-field magnetoresistance of La0.67A0.33MnO3 (A=Sr, Ca). / Watts, S. M.; Li, M.; Wirth, S.; Dahmen, K. H.; Von Molnár, S.; Xiong, P.; Katz, A. S.; Dynes, R. C.

In: Journal of Applied Physics, Vol. 85, No. 8 II A, 15.04.1999, p. 4791-4793.

Research output: Contribution to journalArticle

Watts, SM, Li, M, Wirth, S, Dahmen, KH, Von Molnár, S, Xiong, P, Katz, AS & Dynes, RC 1999, 'Effect of ion-irradiation-induced disorder on the low-field magnetoresistance of La0.67A0.33MnO3 (A=Sr, Ca)', Journal of Applied Physics, vol. 85, no. 8 II A, pp. 4791-4793.
Watts SM, Li M, Wirth S, Dahmen KH, Von Molnár S, Xiong P et al. Effect of ion-irradiation-induced disorder on the low-field magnetoresistance of La0.67A0.33MnO3 (A=Sr, Ca). Journal of Applied Physics. 1999 Apr 15;85(8 II A):4791-4793.
Watts, S. M. ; Li, M. ; Wirth, S. ; Dahmen, K. H. ; Von Molnár, S. ; Xiong, P. ; Katz, A. S. ; Dynes, R. C. / Effect of ion-irradiation-induced disorder on the low-field magnetoresistance of La0.67A0.33MnO3 (A=Sr, Ca). In: Journal of Applied Physics. 1999 ; Vol. 85, No. 8 II A. pp. 4791-4793.
@article{0f0359c29b6444bc8046a0f54165a1d6,
title = "Effect of ion-irradiation-induced disorder on the low-field magnetoresistance of La0.67A0.33MnO3 (A=Sr, Ca)",
abstract = "We report on a systematic study of the correlation between the disorder produced by ion irradiation and the magnetoresistance (MR) behavior of two doped manganite films: a highly textured La0.67Sr0.33MnO3 film on a (100) LaAlO3 substrate and a film of La0.67Ca0.33MnO3 on a YSZ substrate with a high degree of large-angle grain boundary disorder. The films were grown via metal organic chemical vapor deposition and exposed to irradiation of 200 keV Ne ions. The temperature and field dependence of the resistivity were measured on the same samples at different levels of damage. For the Sr-doped film, the bulk magnetic properties were observed to degrade faster with cumulative damage than transport. For both films at low temperature, a low-field hysteretic MR was either induced or enhanced by ion damage. These effects are discussed in terms of diffusive transport through {"}granular{"} magnetically disordered regions.",
author = "Watts, {S. M.} and M. Li and S. Wirth and Dahmen, {K. H.} and {Von Moln{\'a}r}, S. and P. Xiong and Katz, {A. S.} and Dynes, {R. C.}",
year = "1999",
month = "4",
day = "15",
language = "English",
volume = "85",
pages = "4791--4793",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "8 II A",

}

TY - JOUR

T1 - Effect of ion-irradiation-induced disorder on the low-field magnetoresistance of La0.67A0.33MnO3 (A=Sr, Ca)

AU - Watts, S. M.

AU - Li, M.

AU - Wirth, S.

AU - Dahmen, K. H.

AU - Von Molnár, S.

AU - Xiong, P.

AU - Katz, A. S.

AU - Dynes, R. C.

PY - 1999/4/15

Y1 - 1999/4/15

N2 - We report on a systematic study of the correlation between the disorder produced by ion irradiation and the magnetoresistance (MR) behavior of two doped manganite films: a highly textured La0.67Sr0.33MnO3 film on a (100) LaAlO3 substrate and a film of La0.67Ca0.33MnO3 on a YSZ substrate with a high degree of large-angle grain boundary disorder. The films were grown via metal organic chemical vapor deposition and exposed to irradiation of 200 keV Ne ions. The temperature and field dependence of the resistivity were measured on the same samples at different levels of damage. For the Sr-doped film, the bulk magnetic properties were observed to degrade faster with cumulative damage than transport. For both films at low temperature, a low-field hysteretic MR was either induced or enhanced by ion damage. These effects are discussed in terms of diffusive transport through "granular" magnetically disordered regions.

AB - We report on a systematic study of the correlation between the disorder produced by ion irradiation and the magnetoresistance (MR) behavior of two doped manganite films: a highly textured La0.67Sr0.33MnO3 film on a (100) LaAlO3 substrate and a film of La0.67Ca0.33MnO3 on a YSZ substrate with a high degree of large-angle grain boundary disorder. The films were grown via metal organic chemical vapor deposition and exposed to irradiation of 200 keV Ne ions. The temperature and field dependence of the resistivity were measured on the same samples at different levels of damage. For the Sr-doped film, the bulk magnetic properties were observed to degrade faster with cumulative damage than transport. For both films at low temperature, a low-field hysteretic MR was either induced or enhanced by ion damage. These effects are discussed in terms of diffusive transport through "granular" magnetically disordered regions.

UR - http://www.scopus.com/inward/record.url?scp=0000682521&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000682521&partnerID=8YFLogxK

M3 - Article

VL - 85

SP - 4791

EP - 4793

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 8 II A

ER -