Yazar "Acet, Mehmet" için listeleme
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3d transition-metal high-entropy Invar alloy developed by adjusting the valence-electron concentration
Rao, Ziyuan; Çakır, Aslı; Özgün, Özge; Ponge, Dirk; Raabe, D.; Li, Zhiming; Acet, Mehmet (American Physical Society, 2021)By considering the valence-electron concentration of 3d transition-metal alloys and compounds, we develop 3d high-entropy alloy Mn12.1Fe34.2Co33.5Ni12.3Cu7.9 with 8.7 electrons per atom, which is identical to that of ... -
Decomposition in Ni-Co-Mn-In functional Hensler alloys and its effect on shell-ferromagnetic and magnetocaloric effects
Şaşmaz, Merivan; Dreist, F.; Iglesias, I.; Çakır, Aslı; Farle, Michael; Acet, Mehmet (Amer Physical Soc, 2020)Ni-Co-Mn-In Heusler-based compounds are interesting for their magnetocaloric properties and have been widely investigated for this purpose. For Co compositions more than 5 at% in (Ni100-xCox)(50)Mn25+yIn25-y the material ... -
Extended investigation of intermartensitic transitions in Ni-Mn-Ga magnetic shape memory alloys: A detailed phase diagram determination
Çakır, Aslı; Righi, Lara; Albertini, Franca; Acet, Mehmet; Farle, Michael; Aktürk, Selçuk (Amer Inst Physics, 2013)Martensitic transitions in shape memory Ni-Mn-Ga Heusler alloys take place between a high temperature austenite and a low temperature martensite phase. However, intermartensitic transformations have also been encountered ... -
Formation of precipitates in off-stoichiometric Ni-Mn-Sn Heusler alloys probed through the induced Sn-moment
Eggert, Benedikt; Çakır, Aslı; Günzing, Damian; Josten, Nicolas; Scheibel, Franziska; Acet, Mehmet (Royal Society of Chemistry, 2023)The shell-ferromagnetic effect originates from the segregation process in off-stoichiometric Ni-Mn-based Heusler alloys. In this work, we investigate the precipitation process of L21-ordered Ni2MnSn and L10-ordered NiMn ... -
The influence of gallium on the magnetocaloric properties of Gd5Si2Ge2
Aksoy, Seda; Yucel, Atila; Elerman, Yalcin; Krenke, Thorsten; Acet, Mehmet; Moya, Xavier; Manosa, Lluis (Elsevier Science Sa, 2008)Gd5Si2Ge2 was alloyed with varying amounts of Ga to study its influence on the giant magnetocaloric effect. Investigations on Gd-5(Si2-xGe2-x)Ga-2x with 2x = 0.03, 0.05 and 0.13 were carried out using X-ray powder diffraction, ... -
Kinetic arrest and exchange bias in L1(0) Ni-Mn-Ga
Cakir, Asli; Acet, Mehmet; Farle, Michael (Wiley-V C H Verlag Gmbh, 2014)Ni-Mn-Ga Heusler alloys are particularly interesting for their magnetic shape-memory properties. However, more recently, the observation of magnetic glass-like behavior in these alloys, particularly at low Ga concentrations, ... -
Magnetic properties of the FCC and BCC phases of (MnFeCoNi)(80)Cu(20_x)Z(x()Z(1)& nbsp;Al, Ga) high-entropy alloys
Orbay, Yaşar; Rao, Ziyuan; Çakır, Aslı; Tavşanoğlu, Tolga; Farle, Michael; Acet, Mehmet (PERGAMON-ELSEVIER SCIENCE LTD, 2023)In this work, the FCC-BCC phase transition in (MnFeCoNi)80Cu20 (Al, Ga) high entropy alloys were investigated on the basis of structural, magnetic, hardness and thermal expansion properties. It is found that the equiatomic ... -
Magnetic proximity effect and shell-ferromagnetism in metastable Ni50Mn45Ga5
Krenke, Thorsten; Çakır, Aslı; Scheibel, Franziska; Acet, Mehmet; Farle, Michael (Amer Inst Physics, 2016)The present study on magnetic and structural properties of Ni(50)Mn(45)G(a)5 confirms that structural metastability is an inherent property of Ni50Mn50-xXx Heusler alloys with X as In, Ga, and Sn. The ternary alloy transforms ... -
Neutron diffraction and symmetry analysis of the martensitic transformation in Co-doped Ni2MnGa
Orlandi, Fabio; Çakır, Aslı; Manuel, Pascal; Khalyavin, Dmitry D.; Acet, Mehmet; Righi, Lara (Amer Physical Soc, 2020)Martensitic transformations are strain driven displacive transitions governing the mechanical and physical properties in intermetallic materials. This is the case in Ni2MnGa, where the martensite transition is at the heart ... -
Reversibility in the adiabatic temperature-change of Pr0.73Pb0.27MnO3
Cetin, Selda Kilic; Acet, Mehmet; Ekicibil, Ahmet; Sarıkürkcü, Cengiz; Kiymac, Kerim (Elsevier Science Sa, 2013)The investigation of structure, magnetic and magnetocaloric properties of Pr0.73Pb0.27MnO3 perovskite has been studied by using the X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and magnetization. The X-ray ... -
Shell-ferromagnetism in a Ni-Mn-In off-stoichiometric Heusler studied by ferromagnetic resonance
Scheibel, Franziska; Spoddig, Detlef; Meckenstock, Ralf; Çakır, Aslı; Farle, Michael; Acet, Mehmet (Amer Inst Physics, 2017)Next to the multifunctional properties of Ni-Mn-based Heusler alloys new functionalities related to shell-ferromagnetism are emerging. To understand in more detail the properties of shell-ferromagnetism we examine a ... -
Shell-ferromagnetism in Ni-Mn-based Heuslers in view of ductile Ni-Mn-Al
Çakır, Aslı; Acet, Mehmet (Amer Inst Physics, 2017)The presentwork deals with magnetic and structural phase instabilities in Ni-Mn-based Heusler alloys especially Ni-Mn-Al. The temper-annealed Ni50Mn45Al5 Heusler alloy decomposes into the full stoichiometric Ni2MnAl and ... -
Transport properties of shell-ferromagnetic Heusler precipitates in decomposed Ni49.8Mn45.1Sn5.(1) and decomposition limit for Ni50Mn50-xSnx alloys
Çakır, Aslı; Koyun, Hatice Nur; Acet, Mehmet; Farle, Michael (Elsevier, 2020)Shell-ferromagnetism is observed in Mn-rich NiMn-based Heusler alloys as a result of phase-separation. Off-stoichiometric NiMn-based Heusler alloys decompose into a dual-phase composite when annealed under a magnetic field. ... -
A variable pole magnet
Çakır, Aslı; Krenke, Thorsten; Farle, Michael; Acet, Mehmet (Iop Publishing Ltd, 2018)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 ...
