DEPTH PROFILING OF THE MAGNETIC HYPERFINE FIELD IN ULTRATHIN FILMS OF Fe USING MÖSSBAUER SPECTROSCOPY

1979 ◽  
Vol 40 (C2) ◽  
pp. C2-74-C2-75 ◽  
Author(s):  
A. H. Owens ◽  
C. L. Chien ◽  
J. C. Walker
Keyword(s):  
Mössbauer Spectroscopy ◽  
Hyperfine Field ◽  
Ultrathin Films ◽  
Mossbauer Spectroscopy ◽  
Magnetic Hyperfine Field ◽  
Depth Profiling ◽  
Magnetic Hyperfine ◽  
Mößbauer Spectroscopy

Magnetic hyperfine field splitting in the Zintl phase Eu2Mg4Si3

2019 ◽  
Vol 74 (5) ◽  
pp. 451-454 ◽  
Author(s):  
Theresa Block ◽  
Ryosuke Numakura ◽  
Masashi Kosaka ◽  
Shinji Michimura ◽  
Rainer Pöttgen
Keyword(s):  
Mössbauer Spectroscopy ◽  
Hyperfine Field ◽  
Mossbauer Spectroscopy ◽  
Magnetic Hyperfine Field ◽  
Type Structure ◽  
Magnetic Hyperfine ◽  
Hyperfine Fields ◽  
Zintl Phase ◽  
Field Splitting ◽  
Divalent State

AbstractEu2Mg4Si3 ≡ (2Eu2+)(4Mg2+)(3Si4−) is an electron-precise Zintl phase. Its Hf2Co4P3-type structure contains three crystallographically independent europium sites. The divalent state of europium was manifested through 151Eu Mössbauer spectroscopy. In the paramagnetic regime (T = 78 K) the isomer shifts range from −9.16 to −11.29 mm s−1. Eu2Mg4Si3 shows complex magnetic hyperfine field splitting at T = 5.7 K with a superposition of three subspectra with magnetic hyperfine fields of 5.4 (Eu2), 20.4 (Eu1) and 22.4 (Eu3) T.

A 57Fe Mössbauer Spectroscopy Study of the 7 K Superconductor LaFePO

2008 ◽  
Vol 63 (9) ◽  
pp. 1057-1061 ◽  
Author(s):  
Marcus Tegel ◽  
Inga Schellenberg ◽  
Rainer Pöttgen ◽  
Dirk Johrendt
Keyword(s):  
Mössbauer Spectroscopy ◽  
Mossbauer Spectroscopy ◽  
Rietveld Method ◽  
Magnetic Hyperfine Field ◽  
Polycrystalline Sample ◽  
Line Broadening ◽  
Gradient Tensor ◽  
Mößbauer Spectroscopy ◽  
Symmetric Line ◽  
Main Component

A polycrystalline sample of superconducting LaFePO was prepared in a tin flux at 1123 K. The structure was determined from single-crystal data (ZrCuSiAs type, P4/nmm, a = 3.9610(1), c = 8.5158(2) Å , Z = 2), and the phase analysis was performed by the Rietveld method. LaFePO is Pauli-paramagnetic and becomes superconducting at 7 K after removing the ferromagnetic impurity phase Fe2P from the sample. 57Fe Mössbauer spectroscopy measurements at 298, 77, 4.2, and 4 K show single signals at isomer shifts around 0.35 mm s−1, subject to weak quadrupole splitting. At 4 K, a symmetric line broadening appears, resulting from a small transferred magnetic hyperfine field of 1.15(1) T and accompanied by an angle of 54.7(5)◦ between Bhf and Vzz, the main component of the electric field gradient tensor.

Hydrogenated FeTi superlattices studied by hydrogen depth profiling, Mössbauer spectroscopy and X-ray diffraction

1991 ◽  
Vol 172-174 ◽  
pp. 784-791 ◽  
Author(s):  
J. Rydén ◽  
B. Hjörvarsson ◽  
T. Ericsson ◽  
E. Karlsson ◽  
A. Chamberod ◽  
...  
Keyword(s):  
Mössbauer Spectroscopy ◽  
Mossbauer Spectroscopy ◽  
Depth Profiling ◽  
X Ray Diffraction ◽  
X Ray ◽  
Mößbauer Spectroscopy

scholarly journals Mössbauer Spectroscopy of Triphylite (LiFePO4) at Low Temperatures

2019 ◽  
Vol 4 (4) ◽  
pp. 86
Author(s):  
Tomáš Kmječ ◽  
Jaroslav Kohout ◽  
Milan Dopita ◽  
Miroslav Veverka ◽  
Jan Kuriplach
Keyword(s):  
Mössbauer Spectroscopy ◽  
First Principles ◽  
Mossbauer Spectroscopy ◽  
Magnetic Measurements ◽  
Magnetic Moments ◽  
Magnetic Hyperfine Field ◽  
Antiferromagnetic Order ◽  
First Principles Calculations ◽  
Easy Magnetization ◽  
Mößbauer Spectroscopy

Low temperature magnetic ordering in the LiFePO 4 compound is investigated experimentally using Mössbauer spectroscopy and theoretically via first principles calculations. The evaluation of experiment carried out on a powder sample is compatible with an antiferromagnetic order of Fe ion magnetic moments. When an external magnetic field is applied, Fe magnetic moments start to deviate slightly from the [010] easy magnetization direction. These findings are confirmed by means of first principles calculations, which also suggest the magnitude of single ion magnetic anisotropy and orbital and spin-dipolar contributions to the magnetic hyperfine field, which is eventually in a good agreement with the experiment. Diffraction and magnetic measurements complement the study.

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