Yazar "Acet, M." için Metalurji ve Malzeme Mühendisliği Bölümü Koleksiyonu listeleme
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Ab initio Prediction of Martensitic and Intermartensitic Phase Boundaries in Ni-Mn-Ga
Dutta, B.; Çakır, Aslı; Giacobbe, C.; Al-Zubi, A.; Hickel, T.; Acet, M.; Neugebauer, J. (Amer Physical Soc, 2016)Despite the importance of martensitic transformations of Ni-Mn-Ga Heusler alloys for their magneto-caloric and shape-memory properties, the martensitic part of their phase diagrams is not well determined. Using an ab initio ... -
Annealing-time and annealing-temperature dependencies of the size of Ni-Mn-In shell-ferromagnetic nano-precipitates by Scherrer analysis
Dincklage, L.; Scheibel, F.; Çakır, Aslı; Farle, M.; Acet, M. (Amer Inst Physics, 2018)Shell-ferromagnetic effects are observed in Ni-Mn-based off-stoichiometric Heuslers decomposed into ferromagnetic precipitates embedded in an antiferromagnetic matrix when the surface-to-volume ratio of the precipitates ... -
Characteristics of 5M modulated martensite in Ni-Mn-Ga magnetic shape memory alloys
Çakır, Aslı; Acet, M.; Righi, L.; Albertini, F.; Farle, M. (Amer Inst Physics, 2015)The applicability of the magnetic shape memory effect in Ni-Mn-based martensitic Heusler alloys is closely related to the nature of the crystallographically modulated martensite phase in these materials. We study the ... -
Exchange bias caused by field-induced spin reconfiguration in Ni-Mn-Sn
Çakır, Aslı; Acet, M.; Farle, M. (Amer Physical Soc, 2016)Exchange bias is observed in ferromagnetic/antiferromagnetic (FM/AF) layered stacks and in materials with neighboring ferromagnetic and antiferromagnetic granules. The latter is commonly observed in Ni-Mn-based martensitic ... -
Non-volatile high-temperature shell-magnetic pinning of Ni-Mn-Sn Heusler precipitates obtained by decomposition under magnetic field
Çakır, Aslı; Acet, M. (Elsevier Science Bv, 2018)The thermodynamic instability of the off-stoichiometric Ni49.8Mn45.1Sn5.1 martensitic Heusler causes it to decompose into ferromagnetic Ni50Mn25Sn25 precipitates and an antiferromagnetic NiMn matrix. If the decomposition ... -
Room-temperature five-tesla coercivity of a rare-earth-free shell-ferromagnet
Scheibel, F.; Spoddig, D.; Meckenstock, R.; Gottschall, T.; Çakır, Aslı; Krenke, T.; Acet, M. (American Institute of Physics Inc., 2017)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 ... -
Segregation tendency of Hensler alloys
Sokolovskiy, V. V.; Gruner, M. E.; Entel, P.; Acet, M.; Çakır, Aslı; Baigutlin, D. R.; Buchelnikov, D. (Amer Physical Soc, 2019)Segregation in a series of Ni2Mn1+x(In, Sn, Ga, Al)(1-x) and Mn2Ni1+x(Ga, Al) as well as Ni2+xMn1-xGa Heusler alloys is studied by first-principles calculations. We show that Mn-rich Ni2Mn1+x(In, Sn, Al)(1-x) compounds are ... -
Shell-ferromagnetism of nano-Heuslers generated by segregation under magnetic field
Çakır, Aslı; Acet, M.; Farle, M. (Nature Publishing Group, 2016)We report on a new functional property in an AF martensitic Heusler Ni50Mn45In5, which when annealed at high temperatures under a magnetic field, segregates and forms Ni50Mn25In25 Heusler precipitates embedded in a Ni50Mn50 ...