The Low-Temperature Change of the Magnetic Structure and Plastic Properties of Fe-Cr-Ni Alloys

The study of the perovskite manganites La0.47Ca0.53Mn1-xCuxO3 with x = 0, 0.06, 0.09, and 0.13 has been done. The magnetic structure was determined using high-resolution neutron scattering at room temperature and low temperature. All samples were paramagnetic at room temperature and antiferromagnetic at low temperature. Using the SQUID Quantum Design, the samples showed that the doping of the insulating antiferromagnetic phase La0.47Ca0.53MnO3 with Cu doping resulted in the temperature transition from an insulator to metal state, and an antiferromagnetic to paramagnetic phase. The temperature transition from an insulator to metal state ranged from 23 to 100 K and from 200 to 230 K for the transition from an antiferromagnetic to paramagnetic phase.

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Magnetic structure and low-temperature properties of geometrically frustrated SrNd2O4

Physical Review B ◽

10.1103/physrevb.103.134433 ◽

2021 ◽

Vol 103 (13) ◽

Author(s):

N. Qureshi ◽

A. R. Wildes ◽

C. Ritter ◽

B. Fåk ◽

S. X. M. Riberolles ◽

...

Keyword(s):

Low Temperature ◽

Magnetic Structure ◽

Geometrically Frustrated

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Nano-Goethite (α-FeOOH) Magnetic Structure Investigated Using Ising Core-Shell Model: Preliminary Study

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1028.193 ◽

2021 ◽

Vol 1028 ◽

pp. 193-198

Author(s):

Budi Adiperdana ◽

Nadya Larasati Kartika ◽

Risdiana

Keyword(s):

High Temperature ◽

Low Temperature ◽

Shell Model ◽

Magnetic Structure ◽

Paramagnetic State ◽

Core Shell ◽

The Core ◽

Preliminary Study

Ising core-shell model was proposed to reconstruct superparamagnetism hysteresis in nano-goethite (α-FeOOH). Core and shell set as antiferromagnetic and paramagnetic state respectively. Core and shell radius varies until the theoretical hysteresis fit with experiment hysteresis. At low temperature, the hysteresis reconstructed nicely with 55% antiferromagnetic core contribution and 45% paramagnetic shell contribution. At high temperature, the core-shell model show unrealistic result compared to the pure paramagnetic state.

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The Mechanism of Deformation of Fe-Ni Alloys in a Low Temperature Range

Journal of the Japan Institute of Metals and Materials ◽

10.2320/jinstmet1952.38.10_885 ◽

1974 ◽

Vol 38 (10) ◽

pp. 885-891

Author(s):

Shizuo Mukai ◽

Makoto Fujiwara

Keyword(s):

Low Temperature ◽

Temperature Range ◽

Ni Alloys

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Very low-temperature magnetic structure in Ce3Al11

Physica B Condensed Matter ◽

10.1016/s0921-4526(96)01089-7 ◽

1997 ◽

Vol 234-236 ◽

pp. 687-688 ◽

Cited By ~ 3

Author(s):

J.X. Boucherle ◽

F. Givord ◽

G. Lapertot ◽

J. Schweizer ◽

S. Pujol ◽

...

Keyword(s):

Low Temperature ◽

Magnetic Structure ◽

Very Low Temperature

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Superplasticity of Nickel-Based Alloys with Micro- and Sub-Microcrystalline Structures

MRS Proceedings ◽

10.1557/proc-601-43 ◽

1999 ◽

Vol 601 ◽

Cited By ~ 2

Author(s):

V.A. Valitov ◽

B.P. Bewlay ◽

Sh. Kh. Mukhtarov ◽

O.A. Kaibyshev ◽

M.F.X. Gigliotti

Keyword(s):

Grain Size ◽

Low Temperature ◽

High Strain Rate ◽

Static Recrystallization ◽

High Strain ◽

Coarse Grained ◽

Superplastic Behavior ◽

Ni Alloys ◽

Alloy Chemistry ◽

The Relationship

AbstractThis paper will describe the generation of micro- and sub-microcrystalline structures in two Ni-based alloys that are typically strengthened by phases, such as γ′ and γ″+δ. The relationship between the superplastic behavior and microstructure will be discussed. High strain deformation processing in the temperature range of 0.9 Tm to 0. 6Tm results in reduction of the initial coarse-grained structure (>100 µm) to a range of structures including microcrystalline (MC) (grain size <10 µm) and sub-microcrystalline (SMC) (grain size <1 µm) with increasing deformation. The influence of alloy chemistry and constituent phases on dynamic and static recrystallization is considered, and their effect on grain refinement is described. Low-temperature and high strain rate superplasticity can be observed in dispersionstrengthened alloys with SMC structures. It was established that in dispersion-hardened Ni alloys with SMC structures, superplasticity can be observed at temperatures 200-250°C lower than in alloys with MC structure.

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