Magnetic properties of MnSb granular films

M. Mizuguchi; H. Akinaga; K. Ono; M. Oshima

doi:10.1016/S0304-8853(00)00619-3

Magnetic properties of MnSb granular films

M. Mizuguchi, H. Akinaga, K. Ono, M. Oshima

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

7 Citations (Scopus)

Abstract

Magnetoresistance (MR) effects were investigated on MnSb granular films. These films were composed of GaAs substrates, deposited MnSb dots, and Sb capping layers. With increasing nominal thickness of MnSb, a sudden increase in the magnetic circular dichroism intensity was observed over 0.7 nm. The extra-huge positive MR effect more than 10,000% was observed for the sample with the nominal thickness of 0.2nm at room temperature. I-V curve analysis showed the jump from the high-resistance state to the low-resistance state at the critical voltage. It is considered that the coalescence among dots which occurs at a certain nominal thickness plays an important role in the extra-huge MR effect.

Original language	English
Pages (from-to)	1838-1839
Number of pages	2
Journal	Journal of Magnetism and Magnetic Materials
Volume	226-230
Issue number	PART II
DOIs	https://doi.org/10.1016/S0304-8853(00)00619-3
Publication status	Published - 2001
Externally published	Yes

Keywords

Granular systems
MBE
Magneto-optical effects
Magnetoresistance - Thin films

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/S0304-8853(00)00619-3

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title = "Magnetic properties of MnSb granular films",

abstract = "Magnetoresistance (MR) effects were investigated on MnSb granular films. These films were composed of GaAs substrates, deposited MnSb dots, and Sb capping layers. With increasing nominal thickness of MnSb, a sudden increase in the magnetic circular dichroism intensity was observed over 0.7 nm. The extra-huge positive MR effect more than 10,000% was observed for the sample with the nominal thickness of 0.2nm at room temperature. I-V curve analysis showed the jump from the high-resistance state to the low-resistance state at the critical voltage. It is considered that the coalescence among dots which occurs at a certain nominal thickness plays an important role in the extra-huge MR effect.",

keywords = "Granular systems, MBE, Magneto-optical effects, Magnetoresistance - Thin films",

author = "M. Mizuguchi and H. Akinaga and K. Ono and M. Oshima",

note = "Funding Information: This work, partly supported by the New Energy and Industrial Technology Development Organization (NEDO), was performed in JRCAT under the joint research agreement between NAIR and the Angstrom Technology Partnership (ATP).",

year = "2001",

doi = "10.1016/S0304-8853(00)00619-3",

language = "English",

volume = "226-230",

pages = "1838--1839",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

number = "PART II",

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TY - JOUR

T1 - Magnetic properties of MnSb granular films

AU - Mizuguchi, M.

AU - Akinaga, H.

AU - Ono, K.

AU - Oshima, M.

N1 - Funding Information: This work, partly supported by the New Energy and Industrial Technology Development Organization (NEDO), was performed in JRCAT under the joint research agreement between NAIR and the Angstrom Technology Partnership (ATP).

PY - 2001

Y1 - 2001

N2 - Magnetoresistance (MR) effects were investigated on MnSb granular films. These films were composed of GaAs substrates, deposited MnSb dots, and Sb capping layers. With increasing nominal thickness of MnSb, a sudden increase in the magnetic circular dichroism intensity was observed over 0.7 nm. The extra-huge positive MR effect more than 10,000% was observed for the sample with the nominal thickness of 0.2nm at room temperature. I-V curve analysis showed the jump from the high-resistance state to the low-resistance state at the critical voltage. It is considered that the coalescence among dots which occurs at a certain nominal thickness plays an important role in the extra-huge MR effect.

AB - Magnetoresistance (MR) effects were investigated on MnSb granular films. These films were composed of GaAs substrates, deposited MnSb dots, and Sb capping layers. With increasing nominal thickness of MnSb, a sudden increase in the magnetic circular dichroism intensity was observed over 0.7 nm. The extra-huge positive MR effect more than 10,000% was observed for the sample with the nominal thickness of 0.2nm at room temperature. I-V curve analysis showed the jump from the high-resistance state to the low-resistance state at the critical voltage. It is considered that the coalescence among dots which occurs at a certain nominal thickness plays an important role in the extra-huge MR effect.

KW - Granular systems

KW - MBE

KW - Magneto-optical effects

KW - Magnetoresistance - Thin films

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JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

IS - PART II

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