Magnetic properties and magnetic structure of the Mn5Si3-type Tb5Si3 compound

Autor: Satish K. Malik, R. Nirmala, A.V. Morozkin, Olivier Isnard
Přispěvatelé: Lomonosov Moscow State University (MSU), Matériaux, Rayonnements, Structure (MRS), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Department of Mathematics [Madras], Indian Institute of Technology Madras (IIT Madras), Universidade Brasilia, ICCMP (UCCMP), Universidade de Brasilia [Brasília] (UnB)
Rok vydání: 2009
Předmět:
Meta magnetic transitions
Manganese compounds
Magnetism
Neutron diffraction
02 engineering and technology
High temperatures
Magnetization
01 natural sciences
Antiferromagnetism
Propagation vectors
Intermetallic phase
Temperature ranges
Materials Chemistry
Critical fields
Rare earth elements
Critical field
Antiferromagnetic transitions
Metamagnetism
010302 applied physics
Magnetic moment
Condensed matter physics
Chemistry
Metals and Alloys
Magnetic structure
Magnetic datum
Anti-ferromagnetic orderings
Antiferromagnetic materials
021001 nanoscience & nanotechnology
Neutron diffraction patterns
Unit cells
Mechanics of Materials
Magnetic moments
Magnets
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
Magnetization datum
0210 nano-technology
Diffraction
Terbium silicide
Silicides
Silicon
Magnetic transitions
Intermetallics
Spiral types
Field dependences
Holographic interferometry
Temperature dependents
Magnetic orderings
Magnetic properties
Magnetization measurements
0103 physical sciences
Low temperatures
Rare earth intermetallics
Terbium
Magnetic materials
Neutrons
Manganese
Low-field magnetizations
Mechanical Engineering
Magnetic devices
Terbium alloys
Magnetic components
Zdroj: Journal of Magnetism and Magnetic Materials
Journal of Magnetism and Magnetic Materials, Elsevier, 2009, 470, pp.20-23. ⟨10.1016/j.jallcom.2008.02.087⟩
ISSN: 0925-8388
0304-8853
DOI: 10.1016/j.jallcom.2008.02.087
Popis: Neutron diffraction and magnetization measurements have been performed on the Tb5Si3 compound (hexagonal Mn5Si3-type, hP16, P63/mcm) to understand its magnetic structure and magnetic properties. The temperature-dependent neutron diffraction results prove that this intermetallic phase shows a complex flat spiral magnetic ordering, presenting three subsequent changes in magnetization at T m 1 Neu ∼ 100 K , T m 2 Neu = 62 ( 4 ) K and T m 3 Neu = 54 ( 4 ) K on cooling. However, the magnetization data depict two transitions at 72 K (TN1) and 55 K (TN2). The extended temperature range between T m 1 Neu and T m 2 Neu over which the neutron diffraction patterns slowly evolve might correspond to the high-temperature antiferromagnetic transition at TN1 and low-temperature antiferromagnetic transition at TN2 of the magnetic data. Between T m 1 Neu ∼ 100 K and T m 2 Neu = 62 ( 4 ) K Tb5Si3 shows a flat spiral antiferromagnetic ordering with a propagation vector K1 = [0,0, ±1/4]; then, between T m 2 Neu = 62 ( 4 ) K and T m 3 Neu = 54 ( 4 ) K the flat spiral type ordering is conserved, but by two coexisting propagation vectors K1 = [0,0, ±1/4] and K2 = [0,0, ±0.4644(3)]. The terbium magnetic moments arrange in the XY(ab) plane of the unit cell. Below T m 3 Neu = 54 ( 4 ) K the magnetic component with K1 = [0,0, ±1/4] vanishes and magnetic structure of Tb5Si3 is a flat spiral with K2 = [0,0, ±0.4644(3)], only. Low field magnetization measurements confirm the occurrence of complex, multiple magnetic transitions. The field dependence of the magnetization indicates a metamagnetic transition at a critical field of ∼3 T.
Databáze: OpenAIRE
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