Advantages of superconducting quantum interference device-detected magnetic resonance over conventional high-frequency electron paramagnetic resonance for characterization of nanomagnetic materials

被引：14

作者：

Cage, B ^{[1
]}

Russek, SE

Zipse, D

Dalal, NS

机构：

[1] Natl Inst Stand & Technol, Boulder, CO 80305 USA

[2] Florida State Univ, Tallahassee, FL 32306 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2005年 / 97卷 / 10期

关键词：

D O I：

10.1063/1.1850816

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A dc-detected high-frequency electron paramagnetic resonance (HF-EPR) technique, based on a standard superconducting quantum interference device (SQUID) magnetometer, has significant advantages over traditional HF-EPR based on microwave absorption measurements. The SQUID-based technique provides quantitative determination of the dc magnetic moment as a function of microwave power, magnetic field and temperature. The EPR spectra obtained do not contain variability in the line shape and splittings that are commonly observed in the standard single-pass transmission mode HF-EPR. We demonstrate the improved performance by comparing EPR spectra for Fe8 molecular nanomagnets using both SQUID-based and conventional microwave-absorption EPR systems. (c) 2005 American Institute of Physics.

引用

页数：3

共 22 条

[1] Photon-induced magnetization reversal in the Fe8 single-molecule magnet -: art. no. 100408
Bal, M
Friedman, JR
Suzuki, Y
Mertes, KM
Rumberger, EM
Hendrickson, DN
Myasoedov, Y
Shtrikman, H
Avraham, N
Zeldov, E
[J]. PHYSICAL REVIEW B, 2004, 70 (10) : 100408 - 1
[2] Barra AL, 2000, CHEM-EUR J, V6, P1608, DOI 10.1002/(SICI)1521-3765(20000502)6:9<1608::AID-CHEM1608>3.3.CO
[3] 2-#
[4] How and why the characterization of magnetic materials can give directions in the methodological development in high field-high frequency EPR
Brunel, LC
Caneschi, A
Dei, A
Friselli, D
Gatteschi, D
Hassan, AK
Lenci, L
Martinelli, M
Massa, CA
Pardi, LA
Popescu, F
Ricci, I
Sorace, L
[J]. RESEARCH ON CHEMICAL INTERMEDIATES, 2002, 28 (2-3) : 215 - 229
[5] Neutron spectroscopy for the magnetic anisotropy of molecular clusters
Caciuffo, R
Amoretti, G
Murani, A
Sessoli, R
Caneschi, A
Gatteschi, D
[J]. PHYSICAL REVIEW LETTERS, 1998, 81 (21) : 4744 - 4747
[6] 375 GHz EPR measurements on undiluted Cr(V) salts. The role of exchange effects and g-strain broadening in determining resolution in high-field EPR spectroscopy of S=1/2 paramagnets
Cage, B
Hassan, AK
Pardi, L
Krzystek, J
Brunel, LC
Dalal, NS
[J]. JOURNAL OF MAGNETIC RESONANCE, 1997, 124 (02) : 495 - 498
[7] Design for a multifrequency high magnetic field superconducting quantum interference device-detected quantitative electron paramagnetic resonance probe:: Spin-lattice relaxation of cupric sulfate pentahydrate (CuSO4•5H2O)
Cage, B
Russek, S
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 2004, 75 (11) : 4401 - 4405
[8] DEBARCO E, 2004, PHYS REV LETT, V93
[9] MAGNETIC-PROPERTIES OF AN OCTANUCLEAR IRON(III) CATION
DELFS, C
GATTESCHI, D
PARDI, L
SESSOLI, R
WIEGHARDT, K
HANKE, D
[J]. INORGANIC CHEMISTRY, 1993, 32 (14) : 3099 - 3103
[10] Ultrawide band multifrequency high-field EMR technique: A methodology for increasing spectroscopic information
Hassan, AK
Pardi, LA
Krzystek, J
Sienkiewicz, A
Goy, P
Rohrer, M
Brunel, LC
[J]. JOURNAL OF MAGNETIC RESONANCE, 2000, 142 (02) : 300 - 312

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