Local probe studies of Fe hyperfine field in CaFe2As2 by time differential perturbed angular distribution (TDPAD) spectroscopy and ab initio methods

被引：2

作者：

Mohanta, S. K. ^{[1
,2
]}

Mishra, S. N. ^{[1
]}

Davane, S. M. ^{[1
]}

Kumar, Neeraj ^{[1
]}

Thamizhavel, A. ^{[1
]}

Layek, S. ^{[3
]}

Hossain, Z. ^{[3
]}

Srivastava, S. K. ^{[2
]}

机构：

[1] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[2] Indian Inst Technol, Dept Phys & Meteorol, Kharagpur 721302, W Bengal, India

[3] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2013年 / 299卷

关键词：

Hyperfine field; Spin rotation spectra; Commensurate ordering; Curi-Weiss behaviour; MAGNETIC-INTERACTIONS; IMPURITIES; MOMENTS; METAL; 3D;

D O I：

10.1016/j.nimb.2013.02.001

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Applying the gamma-ray perturbed angular distribution technique we have measured the magnetic hyperfine field and spin relaxation time of recoil implanted Fe-54 in single and polycrystalline CaFe2As2 over the temperature range 20-360 K, encompassing both tetragonal and orthorhombic structural phases of the material. The magnetic response of Fe in the high temperature tetragonal phase (T >= 180K), show Curie-Weiss type local susceptibility and Korringa like spin relaxation, reflecting the presence of localized moment on Fe. In the orthorhombic phase, the spin rotation spectra of Fe-54 show two magnetic hyperfine field components, both exhibiting quasi two dimensional magnetic ordering. The experimentally measured hyperfine field and Fe moment show good agreement with results obtained from ab initio calculations performed within the frame work of local spin density approximation (LSDA). (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：71 / 76

页数：6

共 7 条

[1] Magnetism of Fe in SrFe2As2: Local investigation by time differential perturbed angular distribution (TDPAD) spectroscopy
S. K. Mohanta
S. N. Mishra
S. M. Davane
Neeraj Kumar
A. Thamizhavel
S. Layek
Z. Hossain
S. K. Srivastava
Hyperfine Interactions, 2013, 221 : 23 - 27
[2] Magnetism of Fe in SrFe2As2: Local investigation by time differential perturbed angular distribution (TDPAD) spectroscopy
Mohanta, S. K.
Mishra, S. N.
Davane, S. M.
Kumar, Neeraj
Thamizhavel, A.
Layek, S.
Hossain, Z.
Srivastava, S. K.
HYPERFINE INTERACTIONS, 2013, 221 (1-3): : 23 - 27
[3] LOCAL MAGNETIC BEHAVIOR OF 54Fe in EuFe2As2 AND Eu0.5K0.5Fe2As2: MICROSCOPIC STUDY USING TIME DIFFERENTIAL PERTURBED ANGULAR DISTRIBUTION (TDPAD) SPECTROSCOPY
Mohanta, S. K.
Mishra, S. N.
Davane, S. M.
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MODERN PHYSICS LETTERS B, 2013, 27 (31):
[4] Spin fluctuation and local magnetism of isolated Fe impurities in Pd1-xVx alloys studied by time differential perturbed angular distribution spectroscopy
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Srivastava, S. K.
Mishra, S. N.
HYPERFINE INTERACTIONS, 2016, 237
[5] Local Magnetic Behavior of 54Fe in SrFe2As2: Microscopic Study by Perturbed Angular Distribution Spectroscopy
Mohanta, S. K.
Layek, S.
Hossain, Z.
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Mishra, S. N.
SOLID STATE PHYSICS: PROCEEDINGS OF THE 55TH DAE SOLID STATE PHYSICS SYMPOSIUM 2010, PTS A AND B, 2011, 1349 : 889 - +
[6] Local Magnetic Behavior of 54Fe In EuFe2As2: Microscopic Study By Perturbed Angular Distribution Spectroscopy
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INTERNATIONAL CONFERENCE ON PHYSICS OF EMERGING FUNCTIONAL MATERIALS (PEFM-2010), 2010, 1313 : 109 - +
[7] Insights on the relevance of DFT plus U formalism for strongly correlated Ta d electrons probing the nanoscale in oxides: Combined time-differential perturbed γ-γ angular correlation spectroscopy and ab initio study in 181Hf(→181Ta)-implanted α-Al2O3 single crystal
Darriba, G. N.
Faccio, R.
Eversheim, P. D.
Renteria, M.
PHYSICAL REVIEW B, 2023, 108 (24)

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