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

doi:10.1209/0295-5075/32/4/011

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 journal › Letter › peer-review

55 Scopus citations

Abstract

We report the first measurement of giant magnetoresistance at 10 GHz in a bulk ceramic sample of Nd_0.7Sr_0.3MnO₃. From the surface resistance data, we deduce that the magnetoresistance, [Q_μW (0) - Q_μW (B)]/Q_μW (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 language	English (US)
Pages (from-to)	349-353
Number of pages	5
Journal	EPL
Volume	32
Issue number	4
DOIs	https://doi.org/10.1209/0295-5075/32/4/011
State	Published - Nov 1 1995
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1209/0295-5075/32/4/011

Cite this

@article{b3933a97ee4c44d7ab235e3e91584e97,

title = "Giant magnetoresistance at microwave frequencies",

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.",

author = "M. Dom{\'i}nguez and Bhagat, {S. M.} and Lofland, {S. E.} and Ramachandran, {J. S.} and Xiong, {G. C.} and Ju, {H. L.} and T. Venkatesan and Greene, {R. L.}",

year = "1995",

month = nov,

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doi = "10.1209/0295-5075/32/4/011",

language = "English (US)",

volume = "32",

pages = "349--353",

journal = "EPL",

issn = "0295-5075",

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TY - JOUR

T1 - Giant magnetoresistance at microwave frequencies

AU - Domínguez, M.

AU - Bhagat, S. M.

AU - Lofland, S. E.

AU - Ramachandran, J. S.

AU - Xiong, G. C.

AU - Ju, H. L.

AU - Venkatesan, T.

AU - Greene, R. L.

PY - 1995/11/1

Y1 - 1995/11/1

N2 - 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.

AB - 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.

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DO - 10.1209/0295-5075/32/4/011

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AN - SCOPUS:21844518800

SN - 0295-5075

VL - 32

SP - 349

EP - 353

JO - EPL

JF - EPL

IS - 4

ER -

Giant magnetoresistance at microwave frequencies

Abstract

All Science Journal Classification (ASJC) codes

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