Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Thorsten Krenke"'
Publikováno v:
Journal of physics. Condensed matter : an Institute of Physics journal. 30(7)
The off-stoichiometric antiferromagnetic Heusler alloy Fe50Mn45Ga5 decomposes and forms ferromagnetic Fe50Mn25Ga25 precipitates embedded in an antiferromagnetic Fe50Mn50 matrix when temper-annealed at temperatures T > 550 K. The ferromagnetism of the
La0.5Pr0.5Mn2Si2 undergoes an antiferromagnetic-ferromagnetic transition at about 250 K (C). This transition can also be induced by an external magnetic field leading to a metamagnetic transition. This can lead to a large change in the magnetic entro
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Autor:
Thorsten Krenke, Franziska Scheibel, Detlef Spoddig, Oliver Gutfleisch, Ralf Meckenstock, Mehmet Acet, Michael Farle, Aslı Çakır, Tino Gottschall
Ni2MnX-based Heusler (X: main group element), when enriched with Mn, will decompose into ferromagnetic Ni2MnX and antiferromagnetic NiMn when temper-annealed around 650 K. When the starting material is chosen such that the X-composition is about 5 at
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The present study on magnetic and structural properties of Ni50Mn45Ga5 confirms that structural metastability is an inherent property of Ni50Mn50–xXx Heusler alloys with X as In, Ga, and Sn. The ternary alloy transforms during temper-annealing into
Externí odkaz:
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Autor:
Pascale P. Deen, Lluís Mañosa, Thorsten Krenke, Xavier Moya, Mehmet Acet, Antoni Planes, Seda Aksoy, Eberhard F. Wassermann
Publikováno v:
Philosophical Magazine. 89:2093-2109
We study the structural and magnetic properties of Heusler based Ni50Mn50−x Sb x in the composition range 5.0 ≤ x ≤ 25.0. The cubic phase is preserved in the range 17.0 ≤ x ≤ 25.0, and the presence of martensitic transformations are found i
Autor:
Xavier Moya, Lluís Mañosa, A. Yücel, Yalcin Elerman, Mehmet Acet, Thorsten Krenke, Seda Aksoy
Publikováno v:
Journal of Alloys and Compounds. 460:94-98
Gd 5 Si 2 Ge 2 was alloyed with varying amounts of Ga to study its influence on the giant magnetocaloric effect. Investigations on Gd 5 (Si 2− x Ge 2− x )Ga 2 x with 2x = 0.03, 0.05 and 0.13 were carried out using X-ray powder diffraction, temper
Autor:
Jordi Marcos, Mehmet Acet, Seda Aksoy, Lluís Mañosa, Eberhard F. Wassermann, Xavier Moya, Thorsten Krenke, Antoni Planes
Publikováno v:
Advanced Materials Research. 52:221-228
In this paper, we discuss the magnetocaloric behavior of Ni-Mn-based Heusler alloys in rela- tion to their shape-memory and superelastic properties. We show that the magnetocaloric effect in these materials originates from two different contributions
Autor:
Lluís Mañosa, Eberhard F. Wassermann, Thorsten Krenke, Mehmet Acet, Xavier Moya, Antoni Planes, Seda Aksoy
Publikováno v:
Advanced Materials Research. 52:189-197
In this paper, we discuss the possibility of inducing a martensitic transition by means of an applied magnetic field or hydrostatic pressure in Ni-Mn based Heusler shape memory alloys. We report on the shift of the martensitic transition temperatures
Autor:
Vasile O. Garlea, Eberhard F. Wassermann, Xavier Moya, Mehmet Acet, Lluís Mañosa, Antoni Planes, Thorsten Krenke, T.A. Lograsso, M. Morin, Jerel L. Zarestky
Publikováno v:
Materials Science and Engineering: A. :227-230
We have studied the lattice dynamics of a Ni 54 Mn 23 Al 23 (at.%) Heusler single-crystalline alloy by means of neutron scattering and ultrasonic techniques. Results show the existence of a number of precursor phenomena. We have found an anomaly (dip
Publikováno v:
Materials Science and Engineering: A. :49-56
We report a compilation of the structural and magnetic properties of Ni–Mn-based magnetic alloys with special attention to those which undergo martensitic transformations. We discuss the effect of the coupling between structure and magnetism on the