Magnetic phase diagram of MnAs: Effect of magnetic field on structural and magnetic transitions

1982 ◽  
Vol 91 (5) ◽  
pp. 243-245 ◽  
Author(s):  
A. Ziȩba ◽  
Y. Shapira ◽  
S. Foner
1992 ◽  
Vol 4 (44) ◽  
pp. 8599-8608 ◽  
Author(s):  
D F McMorrow ◽  
D A Jehan ◽  
R A Cowley ◽  
R S Eccleston ◽  
G J McIntyre

1989 ◽  
Vol 169 ◽  
Author(s):  
Robert J. Soulen ◽  
Stuart A. Wolf

AbstractRecent measurements of the dissipation in cuprate superconductors in a magnetic field have been interpreted as providing evidence for the presence of new phases in type II superconductors: flux liquids or flux glasses. We suggest that a more conventional interpretation in terms of the electrodynamics of vortices can adequately account for all the observations. Based on this model, we propose a magnetic phase diagram.


1993 ◽  
Vol 191 (1) ◽  
pp. 159-163 ◽  
Author(s):  
V. Ivanov ◽  
L. Vinokurova ◽  
A. Szytuła ◽  
A. Zygmunt

1998 ◽  
Vol 12 (18) ◽  
pp. 1781-1793 ◽  
Author(s):  
Fernando Palacio ◽  
Javier Campo ◽  
M. Carmen Morón ◽  
Armando Paduan-Filho ◽  
Carlos C. Becerra

The phase diagram of low anisotropy antiferromagnets contains regions where small perturbations in the structure can induce rich interesting physical phenomenology that is still to be fully understood. This paper reviews the anomalies observed in site-diluted antiferromagnets in two regions of the magnetic phase diagram: the region where the magnetic field is very low, normally less than 10 Oe, and the spin-flop region. Although the observed phenomena is quite general, the magnetic behavior of the solid solutions A 2 Fe 1-x In x Cl 5· H 2 O , (A=K, Rb) is used to exemplify such anomalies.


1990 ◽  
Vol 67 (9) ◽  
pp. 5442-5444 ◽  
Author(s):  
C. C. Becerra ◽  
A. Zieba ◽  
N. F. Oliveira ◽  
H. F. Jellvag

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Zhe Wang ◽  
Ignacio Gutiérrez-Lezama ◽  
Dumitru Dumcenco ◽  
Nicolas Ubrig ◽  
Takashi Taniguchi ◽  
...  

AbstractRecent experiments on van der Waals antiferromagnets have shown that measuring the temperature (T) and magnetic field (H) dependence of the conductance allows their magnetic phase diagram to be mapped. Similarly, experiments on ferromagnetic CrBr3 barriers enabled the Curie temperature to be determined at H = 0, but a precise interpretation of the magnetoconductance data at H ≠ 0 is conceptually more complex, because at finite H there is no well-defined phase boundary. Here we perform systematic transport measurements on CrBr3 barriers and show that the tunneling magnetoconductance depends on H and T exclusively through the magnetization M(H, T) over the entire temperature range investigated. The phenomenon is reproduced by the spin-dependent Fowler–Nordheim model for tunneling, and is a direct manifestation of the spin splitting of the CrBr3 conduction band. Our analysis unveils a new approach to probe quantitatively different properties of atomically thin ferromagnetic insulators related to their magnetization by performing simple conductance measurements.


2003 ◽  
Vol 81 (6) ◽  
pp. 797-804 ◽  
Author(s):  
G Quirion ◽  
A Kelly ◽  
S Newbury ◽  
F S Razavi ◽  
J D Garrett

It is now well-established that the strong anisotropy in the magnetic properties of the intermetallic compounds UT2Si2, where T stands for a transition metal, is responsible for their rich magnetic phase diagram. However, within that series of compounds, UNi2Si2 is one that shows an unusual sequence of magnetically ordered states. Thus, to better understand its unusual properties, we have investigated the elastic properties of UNi2Si2 as a function of temperature, magnetic field, and pressure. In all three magnetic phases, our measurements indicate that the sound-velocity temperature dependence is dominated by the magnetoelastic coupling. Moreover, the analysis of the temperature dependence for the incommensurate longitudinal spin-density wave phase is consistent with a critical exponent β = 0.38 ± 0.01. We also present the magnetic phase diagram for UNi2Si2 obtained at 0 and 8 kbar. Our investigation reveals that the triple-point coordinates (Tp, Hp) decrease with pressure at a rate of dTp/dP = –0.1 K/kbar and dHp/dP = –0.1 T/kbar, respectively. PACS Nos.: 75.30.kz, 62.20.Dc, 62.50.+p, 75.40.Cx


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