Field tuning of thermally activated magnetic quantum tunnelling in Mn12-Ac molecules

J. M. Hernández; X. X. Zhang; F. Luis; J. Bartolomé; J. Tejada; R. Ziolo

doi:10.1209/epl/i1996-00570-7

Field tuning of thermally activated magnetic quantum tunnelling in Mn₁₂-Ac molecules

J. M. Hernández^*, X. X. Zhang, F. Luis, J. Bartolomé, J. Tejada, R. Ziolo

^*Corresponding author for this work

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

286 Scopus citations

Abstract

Zero-field-cooled magnetization, magnetic relaxation, and a.c. susceptibility measurements have been performed on a Mn₁₂-Ac oriented powdered sample as a function of temperature, field, and orientation. Magnetization jumps and susceptibility peaks have been observed about magnetic-field values B_n = nB₁, where B₁ ≈ 5 kG. These anomalies are due to the existence of relaxation rate maxima near B_n. From these experimental results we infer the existence of resonant spin tunnelling between degenerate excited levels of opposite spin orientation.

Original language	English (US)
Pages (from-to)	301-306
Number of pages	6
Journal	Europhysics Letters
Volume	35
Issue number	4
DOIs	https://doi.org/10.1209/epl/i1996-00570-7
State	Published - Aug 1 1996
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1209/epl/i1996-00570-7

Cite this

@article{f466bfc119f44a389320e9f3052bed1c,

title = "Field tuning of thermally activated magnetic quantum tunnelling in Mn12-Ac molecules",

abstract = "Zero-field-cooled magnetization, magnetic relaxation, and a.c. susceptibility measurements have been performed on a Mn12-Ac oriented powdered sample as a function of temperature, field, and orientation. Magnetization jumps and susceptibility peaks have been observed about magnetic-field values Bn = nB1, where B1 ≈ 5 kG. These anomalies are due to the existence of relaxation rate maxima near Bn. From these experimental results we infer the existence of resonant spin tunnelling between degenerate excited levels of opposite spin orientation.",

author = "Hern{\'a}ndez, {J. M.} and Zhang, {X. X.} and F. Luis and J. Bartolom{\'e} and J. Tejada and R. Ziolo",

year = "1996",

month = aug,

day = "1",

doi = "10.1209/epl/i1996-00570-7",

language = "English (US)",

volume = "35",

pages = "301--306",

journal = "Europhysics Letters",

issn = "0295-5075",

publisher = "European Physical Society",

number = "4",

}

TY - JOUR

T1 - Field tuning of thermally activated magnetic quantum tunnelling in Mn12-Ac molecules

AU - Hernández, J. M.

AU - Zhang, X. X.

AU - Luis, F.

AU - Bartolomé, J.

AU - Tejada, J.

AU - Ziolo, R.

PY - 1996/8/1

Y1 - 1996/8/1

N2 - Zero-field-cooled magnetization, magnetic relaxation, and a.c. susceptibility measurements have been performed on a Mn12-Ac oriented powdered sample as a function of temperature, field, and orientation. Magnetization jumps and susceptibility peaks have been observed about magnetic-field values Bn = nB1, where B1 ≈ 5 kG. These anomalies are due to the existence of relaxation rate maxima near Bn. From these experimental results we infer the existence of resonant spin tunnelling between degenerate excited levels of opposite spin orientation.

AB - Zero-field-cooled magnetization, magnetic relaxation, and a.c. susceptibility measurements have been performed on a Mn12-Ac oriented powdered sample as a function of temperature, field, and orientation. Magnetization jumps and susceptibility peaks have been observed about magnetic-field values Bn = nB1, where B1 ≈ 5 kG. These anomalies are due to the existence of relaxation rate maxima near Bn. From these experimental results we infer the existence of resonant spin tunnelling between degenerate excited levels of opposite spin orientation.

UR - http://www.scopus.com/inward/record.url?scp=0038526200&partnerID=8YFLogxK

U2 - 10.1209/epl/i1996-00570-7

DO - 10.1209/epl/i1996-00570-7

M3 - Article

AN - SCOPUS:0038526200

SN - 0295-5075

VL - 35

SP - 301

EP - 306

JO - Europhysics Letters

JF - Europhysics Letters

IS - 4

ER -

Field tuning of thermally activated magnetic quantum tunnelling in Mn₁₂-Ac molecules

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this