Giant magnetoresistance at microwave frequencies

M. Domínguez, S. M. Bhagat, S. E. Lofland, J. S. Ramachandran, G. C. Xiong, H. L. Ju, T. Venkatesan, R. L. Greene

Research output: Contribution to journalLetter

51 Citations (Scopus)

Abstract

We report the first measurement of giant magnetoresistance at 10 GHz in a bulk ceramic sample of Nd0.7Sr0.3MnO3. From the surface resistance data, we deduce that the magnetoresistance, [QμW (0) - QμW (B)]/QμW (0) at 1.2 T, has a peak value of approximately 90% at 215 K. The microwave studies are supplemented by data on low-field (£ 3.5mT) d.c. magnetization and d.c. resistivity. From the magnetization data, we find that Tc = (219 ± 2) K The zero-field microwave loss peaks at Tp = (216 ± 2) K. The field dependence of the microwave absorption suggests that these materials can prove to be extremely useful in designing microwave devices.

Original languageEnglish
Pages (from-to)349-353
Number of pages5
JournalEPL
Volume32
Issue number4
DOIs
Publication statusPublished - 1995 Nov 1

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Domínguez, M., Bhagat, S. M., Lofland, S. E., Ramachandran, J. S., Xiong, G. C., Ju, H. L., Venkatesan, T., & Greene, R. L. (1995). Giant magnetoresistance at microwave frequencies. EPL, 32(4), 349-353. https://doi.org/10.1209/0295-5075/32/4/011