Characterization of single magnetic particles with InAs quantum-well Hall devices

被引：24

作者：

Landry, G ^{[1
]}

Miller, MM

Bennett, BR

Johnson, M

Smolyaninova, V

机构：

[1] USN, Res Lab, Washington, DC 20375 USA

[2] Towson Univ, Dept Phys Astron & Geosci, Towson, MD 21252 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 20期

关键词：

D O I：

10.1063/1.1827328

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have measured the magnetic dipolar field from individual micron-sized spherical ferromagnetic particles. The particles were positioned using an atomic force microscope and measured using submicron Hall sensors fabricated from an InAs single-quantum-well heterostructure with lateral dimensions of 0.5-2.5 mum. The magnetic moment of individual particles has been measured, verifying their dipolar moment. We also demonstrate a scaling rule for the detection of individual particles which is relevant to the design of biosensors. (C) 2004 American Institute of Physics.

引用

收藏

页码：4693 / 4695

页数：3

相关论文

共 9 条

[1] A biosensor based on magnetoresistance technology [J].

Baselt, DR ;

Lee, GU ;

Natesan, M ;

Metzger, SW ;

Sheehan, PE ;

Colton, RJ .

BIOSENSORS & BIOELECTRONICS, 1998, 13 (7-8) :731-739

[2] Materials growth for InAs high electron mobility transistors and circuits [J].

Bennett, BR ;

Tinkham, BP ;

Boos, JB ;

Lange, MD ;

Tsai, R .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 2004, 22 (02) :688-694

[3] Detection of a single magnetic microbead using a miniaturized silicon Hall sensor [J].

Besse, PA ;

Boero, G ;

Demierre, M ;

Pott, V ;

Popovic, R .

APPLIED PHYSICS LETTERS, 2002, 80 (22) :4199-4201

[4] Determination of crystallite size in a magnetic nanocomposite using extended x-ray absorption fine structure [J].

Calvin, S ;

Miller, MM ;

Goswami, R ;

Cheng, SF ;

Mulvaney, SP ;

Whitman, LJ ;

Harris, VG .

JOURNAL OF APPLIED PHYSICS, 2003, 94 (01) :778-783

[5] Diffusive transport in a Hall junction with a microinhomogeneous magnetic field [J].

Ibrahim, IS ;

Schweigert, VA ;

Peeters, FM .

PHYSICAL REVIEW B, 1998, 57 (24) :15416-15427

[6] Detection of a micron-sized magnetic sphere using a ring-shaped anisotropic magnetoresistance-based sensor: A model for a magnetoresistance-based biosensor [J].

Miller, MM ;

Prinz, GA ;

Cheng, SF ;

Bounnak, S .

APPLIED PHYSICS LETTERS, 2002, 81 (12) :2211-2213

[7] A DNA array sensor utilizing magnetic microbeads and magnetoelectronic detection [J].

Miller, MM ;

Sheehan, PE ;

Edelstein, RL ;

Tamanaha, CR ;

Zhong, L ;

Bounnak, S ;

Whitman, LJ ;

Colton, RJ .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2001, 225 (1-2) :138-144

[8] SURFACE DONOR CONTRIBUTION TO ELECTRON SHEET CONCENTRATIONS IN NOT-INTENTIONALLY DOPED INAS-ALSB QUANTUM-WELLS [J].

NGUYEN, C ;

BRAR, B ;

KROEMER, H ;

ENGLISH, JH .

APPLIED PHYSICS LETTERS, 1992, 60 (15) :1854-1856

[9] Design and performance of GMR sensors for the detection of magnetic microbeads in biosensors [J].

Rife, JC ;

Miller, MM ;

Sheehan, PE ;

Tamanaha, CR ;

Tondra, M ;

Whitman, LJ .

SENSORS AND ACTUATORS A-PHYSICAL, 2003, 107 (03) :209-218