Yazar "Acet, M." için Fakülteler 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 ... -
Electronic aspects of the martensitic transition in Ni-Mn based Heusler alloys
Krenke, T.; Moya, X.; Aksoy, S.; Acet, M.; Entel, P.; Manosa, Ll.; Wassermann, E. F.; Yücel, Atila (Elsevier, 2007)The martensitic transformation temperature Ms depends linearly on the valence electron concentration for Ni-Mn-X Heusler systems where X is a group III-group V element. However, the slopes of the linearity are different ... -
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 ... -
Magnetic properties of La0.65Ca0.30Pb0.05Mn0.9B0.1O3 (B = Co, Ni, Cu and Zn)
Coşkun, Atilla; Taşarkuyu, Ergün; Irmak, A. E.; Acet, M.; Samancıoğlu, Y.; Aktürk, S. (Elsevier Science Sa, 2015)The La0.65Ca0.30Pb0.05Mn0.9B0.1O3 (A = Co, Ni, Cu and Zn) manganites have been prepared via sol-gel method and sintered at 1100 degrees C for 24 h. The aim of the study was to investigate B-site cation doping effects on ... -
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 ... -
Phase formation characteristics and magnetic properties of bulk Ni2MnGe Heusler alloy
Adem, U.; Dincer, I.; Aktürk, Selçuk; Acet, M.; Elerman, Y. (Elsevier Science Sa, 2015)We have systemically studied the effects of annealing temperature and alloy composition on the structural and magnetic properties of bulk Ni2MnGe and Ni2.1Mn0.9Ge Heusler alloys. We have observed that both annealing ... -
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 ...