scholarly journals Helimagnetism in MnBi2Se4 Driven by Spin-Frustrating Interactions Between Antiferromagnetic Chains

Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 242
Author(s):  
Judith K. Clark ◽  
Chongin Pak ◽  
Huibo Cao ◽  
Michael Shatruk
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Easy Axis ◽  
Linear Chain ◽  
Magnetic Behavior ◽  
Propagation Direction ◽  
Spin Frustration ◽  
Magnetization Direction ◽  
Turn Angle ◽  
Ordered State

We report the magnetic properties and magnetic structure determination for a linear-chain antiferromagnet, MnBi2Se4. The crystal structure of this material contains chains of edge-sharing MnSe6 octahedra separated by Bi atoms. The magnetic behavior is dominated by intrachain antiferromagnetic (AFM) interactions, as demonstrated by the negative Weiss constant of −74 K obtained by the Curie–Weiss fit of the paramagnetic susceptibility measured along the easy-axis magnetization direction. The relative shift of adjacent chains by one-half of the chain period causes spin frustration due to interchain AFM coupling, which leads to AFM ordering at TN = 15 K. Neutron diffraction studies reveal that the AFM ordered state exhibits an incommensurate helimagnetic structure with the propagation vector k = (0, 0.356, 0). The Mn moments are arranged perpendicular to the chain propagation direction (the crystallographic b axis), and the turn angle around the helix is 128°. The magnetic properties of MnBi2Se4 are discussed in comparison to other linear-chain antiferromagnets based on ternary mixed-metal halides and chalcogenides.

scholarly journals Изменение направления оси легкого намагничивания массивов сегментированных нанонитей Ni/Cu с увеличением длины сегмента Ni

2021 ◽  
Vol 63 (7) ◽  
pp. 881
Author(s):  
А.А. Мистонов ◽  
И.С. Дубицкий ◽  
А.Х.А. Елмекави ◽  
Е.Г. Яшина ◽  
С.В. Сотничук ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Easy Axis ◽  
Storage Systems ◽  
Three Dimensional ◽  
Magnetic Behavior ◽  
Diameter Ratio ◽  
Information Storage ◽  
Promising Material ◽  
Segment Length ◽  
Competing Interactions

Arrays of ordered segmented nanowires are considered as a promising material for three-dimensional information storage systems. However, the presence of a large number of competing interactions significantly complicates the description of the magnetic behavior of such systems. In this work, the influence of the length of the nickel segment on the integral magnetic properties of the array is investigated. In particular, it is shown that the change in the direction of the easy axis of magnetization occurs when the segment length to diameter ratio is in the range from 10 to 20.

Synthesis, crystal structure and magnetic properties of a new copper oxo-antimony sulphate CuSb6O8(SO4)2

2016 ◽  
Vol 45 (1) ◽  
pp. 392-396 ◽  
Author(s):  
Iwan Zimmermann ◽  
Reinhard K. Kremer ◽  
Shichao Hu ◽  
Mats Johnsson
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Long Range ◽  
Linear Chain ◽  
Heisenberg Antiferromagnet ◽  
Antiferromagnetic Ordering

The crystal structure of the new compound CuSb6O8(SO4)2 is made up of charge neutral layers with long antimony oxygen distances present in between the layers. CuSb6O8(SO4)2 constitutes a linear chain S = 1/2 Heisenberg antiferromagnet (J ∼ 2.8 K) which undergoes long-range antiferromagnetic ordering at 0.69 K.

Magnetic properties and crystal structure of a linear-chain copper(II) compound with bridging chloride and oxamidate ligands

1993 ◽  
pp. 3363 ◽  
Author(s):  
Andrea Cornia ◽  
Antonio C. Fabretti ◽  
Fabrizio Ferraro ◽  
Dante Gatteschi ◽  
Aleardo Giusti
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Linear Chain

Magnetic properties and crystal structure of a linear-chain copper(II) compound with bridging acetate and oxamidate ligands

1986 ◽  
Vol 25 (7) ◽  
pp. 1063-1066 ◽  
Author(s):  
A. Bencini ◽  
C. Benelli ◽  
A. C. Fabretti ◽  
G. Franchini ◽  
D. Gatteschi
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Linear Chain

scholarly journals Spin Crossover in Three Mononuclear Iron (III) Schiff Base Complexes

Metals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 849 ◽  
Author(s):  
Ivan Nemec ◽  
Ingrid Svoboda ◽  
Radovan Herchel
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Schiff Base ◽  
Spin Crossover ◽  
Theoretical Calculations ◽  
Magnetic Behavior ◽  
Schiff Base Complexes ◽  
Mononuclear Iron ◽  
Mononuclear Complexes

The synthesis, crystal structure, and magnetic properties of three new mononuclear complexes [Fe(R-LA)(L1)](BPh4), where R-LA2− is a doubly deprotonated pentadentate Schiff base ligand and L1 is a monodentate benzimidazole or furopyridine ligand, are reported. Ligand- and anion-driven changes in crystal structures and magnetic behavior were investigated in terms of the magnetic susceptibility measurements and theoretical calculations.

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