Magnetic and magnetoresistance measurements on iron-based nanoclusters in In0.53Ga0.47As

T. M. Pekarek; B. C. Crooker; S. Li; M. McElfresh; J. C. P. Chang; D. McInturff; E. S. Harmon; M. R. Melloch; J. M. Woodall

doi:10.1063/1.364861

Magnetic and magnetoresistance measurements on iron-based nanoclusters in In0.53Ga0.47As

T. M. Pekarek, B. C. Crooker, S. Li, M. McElfresh, J. C. P. Chang, D. McInturff, E. S. Harmon, M. R. Melloch, J. M. Woodall

Research output: Contribution to journal › Article › peer-review

Abstract

We have obtained magnetoresistance data on low iron-concentration samples (∼1%) showing a large negative magnetoresistance (3.2% at 5 K in 0.5 T) attributed to imbedded superparamagnetic clusters in In0.53Ga0.47As. The samples were prepared by ion implanting a p-In0.53Ga0.47As layer with iron followed by a rapid thermal anneal. Magnetic measurements confirm the formation of a cluster size distribution with a mean diameter of 6.2 nm and effective moment of 7000 bohr magnetons. The magnetization of these single domain ferromagnets is 50% saturated in a field of only 0.2 T even at room temperature which is important for device applications.

Original language	American English
Journal	Journal of Applied Physics
Volume	81
DOIs	https://doi.org/10.1063/1.364861
State	Published - Apr 15 1997
Externally published	Yes

Disciplines

Atomic, Molecular and Optical Physics
Physics
Quantum Physics

Access to Document

10.1063/1.364861License: Unspecified

Cite this

@article{c96503e845b9469d8d63702cc4f44d0a,

title = "Magnetic and magnetoresistance measurements on iron-based nanoclusters in In0.53Ga0.47As",

abstract = "We have obtained magnetoresistance data on low iron-concentration samples (∼1%) showing a large negative magnetoresistance (3.2% at 5 K in 0.5 T) attributed to imbedded superparamagnetic clusters in In0.53Ga0.47As. The samples were prepared by ion implanting a p-In0.53Ga0.47As layer with iron followed by a rapid thermal anneal. Magnetic measurements confirm the formation of a cluster size distribution with a mean diameter of 6.2 nm and effective moment of 7000 bohr magnetons. The magnetization of these single domain ferromagnets is 50% saturated in a field of only 0.2 T even at room temperature which is important for device applications.",

author = "Pekarek, {T. M.} and Crooker, {B. C.} and S. Li and M. McElfresh and Chang, {J. C. P.} and D. McInturff and Harmon, {E. S.} and Melloch, {M. R.} and Woodall, {J. M.}",

year = "1997",

month = apr,

day = "15",

doi = "10.1063/1.364861",

language = "American English",

volume = "81",

journal = "Journal of Applied Physics",

issn = "1089-7550",

}

TY - JOUR

T1 - Magnetic and magnetoresistance measurements on iron-based nanoclusters in In0.53Ga0.47As

AU - Pekarek, T. M.

AU - Crooker, B. C.

AU - Li, S.

AU - McElfresh, M.

AU - Chang, J. C. P.

AU - McInturff, D.

AU - Harmon, E. S.

AU - Melloch, M. R.

AU - Woodall, J. M.

PY - 1997/4/15

Y1 - 1997/4/15

N2 - We have obtained magnetoresistance data on low iron-concentration samples (∼1%) showing a large negative magnetoresistance (3.2% at 5 K in 0.5 T) attributed to imbedded superparamagnetic clusters in In0.53Ga0.47As. The samples were prepared by ion implanting a p-In0.53Ga0.47As layer with iron followed by a rapid thermal anneal. Magnetic measurements confirm the formation of a cluster size distribution with a mean diameter of 6.2 nm and effective moment of 7000 bohr magnetons. The magnetization of these single domain ferromagnets is 50% saturated in a field of only 0.2 T even at room temperature which is important for device applications.

AB - We have obtained magnetoresistance data on low iron-concentration samples (∼1%) showing a large negative magnetoresistance (3.2% at 5 K in 0.5 T) attributed to imbedded superparamagnetic clusters in In0.53Ga0.47As. The samples were prepared by ion implanting a p-In0.53Ga0.47As layer with iron followed by a rapid thermal anneal. Magnetic measurements confirm the formation of a cluster size distribution with a mean diameter of 6.2 nm and effective moment of 7000 bohr magnetons. The magnetization of these single domain ferromagnets is 50% saturated in a field of only 0.2 T even at room temperature which is important for device applications.

UR - http://aip.scitation.org/doi/full/10.1063/1.364861

U2 - 10.1063/1.364861

DO - 10.1063/1.364861

M3 - Article

SN - 1089-7550

VL - 81

JO - Journal of Applied Physics

JF - Journal of Applied Physics

ER -

Magnetic and magnetoresistance measurements on iron-based nanoclusters in In0.53Ga0.47As

Abstract

Disciplines

Access to Document

Other files and links

Cite this