Synthesis and magnetic transitions of rare-earth-free Fe–Mn–Ni–Si-based compositionally complex alloys at bulk and nanoscale

• Shabbir Tahir,
• Tatiana Smoliarova,
• Carlos Doñate-Buendía,
• Michael Farle,
• Natalia Shkodich and
• Bilal Gökce

Beilstein J. Nanotechnol. 2025, 16, 823–836, doi:10.3762/bjnano.16.62

• are prepared by ball milling and spark plasma sintering or powder pressing and sintering. Nanoparticles (NPs) from the bulk materials are synthesized by pulsed laser ablation in liquid. Magnetization measurements confirm a ferromagnetic-to-paramagnetic phase transition in bulk alloys, with Tc = 179 K

• indicate that the Al-based CCA is a promising, cost-effective alternative to Ge-based CCA at nanoscale, providing an economically viable and cost-effective alternative for nanoscale-based applications. Keywords: compositionally complex alloys; magnetic phase transition; nanoparticles; pulsed laser

• ablation in liquid; rare-earth free; Introduction Magnetic phase transitions are characterized by changes in the material’s magnetic properties in response to varying conditions such as applied magnetic or electric fields, temperature, and/or pressure. In particular, the magnetic phase transition at the

Aprepitant-loaded solid lipid nanoparticles: a novel approach to enhance oral bioavailability

• Mazhar Hussain,
• Muhammad Farooq,
• Muhammad Asad Saeed,
• Muhammad Ijaz,
• Sherjeel Adnan,
• Zeeshan Masood,
• Muhammad Waqas,
• Wafa Ishaq and
• Nabeela Ameer

Beilstein J. Nanotechnol. 2025, 16, 652–663, doi:10.3762/bjnano.16.50

• (Figure 5b) were conducted to the study physical state of APT, β-CD, poloxamer 407, and APT-loaded SLNs formulations. APT exhibits an endothermic melting peak at 255 °C, which indicates a phase transition of APT. An endothermic peak of β-CD is seen at 100 °C, which is associated with the release of water

Retrieval of B1 phase from high-pressure B2 phase for CdO nanoparticles by electronic excitations in Cd_xZn_1−xO composite thin films

• Arkaprava Das,
• Marcin Zając and
• Carla Bittencourt

Beilstein J. Nanotechnol. 2025, 16, 551–560, doi:10.3762/bjnano.16.43

• peak corresponding to willemite Zn2SiO4 (space group R−3) is observed at 38.8°, previously identified as a contributing factor to the B2 phase transition [1]. In the case of the CZ900_113O sample, a reduction in the intensity of the B2 phase reflections is noted, accompanied by a subtle emergence of

• localized pressure triggers the phase transition from B1 to B2 in CdO nanoparticles. Notably, 80 MeV oxygen ion irradiation results in the reappearance of the B1 phase, while 120 MeV silver ion irradiation completely amorphizes the B2 phase due to a higher Se (25.1 keV/nm). In contrast, the Se value for 120

• of the B1 phase is the reduction of localized pressure exerted by Zn2SiO4 nanoparticles due to oxygen ion irradiation. This phase transition from B1 to B2 is reported to be irreversible under hydrostatic pressure [14] or localized pressure [1]. However, ion irradiation has emerged as an effective

Effect of radiation-induced vacancy saturation on the first-order phase transformation in nanoparticles: insights from a model

• Aram Shirinyan and
• Yuriy Bilogorodskyy

Beilstein J. Nanotechnol. 2024, 15, 1453–1472, doi:10.3762/bjnano.15.117

• . For example, a two-phase TiCr alloy undergoes phase transformation when irradiated with Kr+ ions with an energy of 1 MeV [13]. In another study, a bcc→fcc phase transition was observed in an α-FeNi alloy due to radiation of self-ions at 673 K and a dose of approximately 1.2 dpa [14]. Furthermore

• phase [7]. In all cells, the grains undergo a phase transition from a pure high-density fcc phase to a mixture of fcc and bcc phases during prolonged irradiation. These simulations confirm that the phase transition occurs because of the ground-state energies of the compositions rather than the

• on the model of α→β phase transition and the reverse β→α phase transition from a thermodynamics perspective. Finally, section “Discussion” discusses the effects of size and irradiation, justifying their relevance to metals and ceramics, and presents the particular case of Fe nanoparticles. Theory In

Synthesis, characterization and anticancer effect of doxorubicin-loaded dual stimuli-responsive smart nanopolymers

• Ömür Acet,
• Pavel Kirsanov,
• Burcu Önal Acet,
• Inessa Halets-Bui,
• Dzmitry Shcharbin,
• Şeyda Ceylan Cömert and
• Mehmet Odabaşı

Beilstein J. Nanotechnol. 2024, 15, 1189–1196, doi:10.3762/bjnano.15.96

• [9]. Certain designs in nanostructures are extremely useful to combat diseases [12][13]. Polymeric platforms have attracted great interest in recent years [14][15][16][17][18][19][20]. “Stimulus-sensitive” polymers (smart polymers) exhibit conformational changes or phase transition behavior in

Atomistic insights into the morphological dynamics of gold and platinum nanoparticles: MD simulations in vacuum and aqueous media

• Evangelos Voyiatzis,
• Eugenia Valsami-Jones and
• Antreas Afantitis

Beilstein J. Nanotechnol. 2024, 15, 995–1009, doi:10.3762/bjnano.15.81

• signifies the occurrence of a phase transition in a cluster of atoms. Additional atomic parameters are the average potential energy, force, and coordination number per atom. These quantities have also been employed as descriptors in nano-QSAR models to successfully predict the toxicity of NPs [73][74][75

• , which is another manifestation of a first-order phase transition. When comparing Au NPs with Pt NPs with the same diameter and at the same temperature, we observe that the potential energy is higher in the case of Pt. It reflects that Pt crystal structures have a higher cohesive energy than the

• phase transition in the considered temperature range; this is similar to their bulk counterparts, which display only one stable phase. The dependence of the potential energy on the NP diameter is more pronounced for the smaller NPs considered, while an almost marginal difference between the NPs with 7

Directed growth of quinacridone chains on the vicinal Ag(35 1 1) surface

• Niklas Humberg,
• Lukas Grönwoldt and
• Moritz Sokolowski

Beilstein J. Nanotechnol. 2024, 15, 556–568, doi:10.3762/bjnano.15.48

• on Ag(100), we know that the elevated temperature induces an irreversible phase transition into a heterochiral and commensurate structure, the so-called β-phase [23]. This phase is also obtained after deposition at 500 K and subsequent cooling to 300 K. This preparation was chosen here. The β-phase

Controllable physicochemical properties of WO_x thin films grown under glancing angle

• Rupam Mandal,
• Aparajita Mandal,
• Alapan Dutta,
• Rengasamy Sivakumar,
• Sanjeev Kumar Srivastava and
• Tapobrata Som

Beilstein J. Nanotechnol. 2024, 15, 350–359, doi:10.3762/bjnano.15.31

• revealed from the XRD studies, as-deposited NS-WOx films are amorphous in nature, whereas post-growth vacuum-annealed (at 673 K for 1 h) films show an amorphous-to-crystalline structural phase transition. XPS analysis confirms an increasing concentration of defect density in the form of oxygen vacancies

Nanomedicines against Chagas disease: a critical review

• Maria Jose Morilla,
• Kajal Ghosal and
• Eder Lilia Romero

Beilstein J. Nanotechnol. 2024, 15, 333–349, doi:10.3762/bjnano.15.30

• , nanomedicines are highly susceptible to aggregation, hygroscopicity, contamination, phase transition, amorphous-to-crystalline transitions, and degradation. It is critical to maintain batch-to-batch reproducibility (in terms of mean size, polydispersity, ζ-potential, and drug loading) not only during large

Two-dimensional molecular networks at the solid/liquid interface and the role of alkyl chains in their building blocks

• Suyi Liu,
• Yasuo Norikane and
• Yoshihiro Kikkawa

Beilstein J. Nanotechnol. 2023, 14, 872–892, doi:10.3762/bjnano.14.72

• (arrows C in Figure 11d,e) were arranged in a stepped manner with periodic shifts. 2D molecular arrangements are not completely the same as 3D crystals because of the presence of the substrate (HOPG) [137]. However, a correlation between the 2D structural modulation and the phase transition temperatures

• phase transition temperature (melting point) for 1-HA-OCn (blue) and 2-HA-OCn (red) as a function of the number of carbon atoms in the alkyl chains. (a–c) Wheat-like structure formed by different orientations of anthraquinone pairs; (d–f) knot-like structure in which the clusters of the anthraquinone

Nanostructured lipid carriers containing benznidazole: physicochemical, biopharmaceutical and cellular in vitro studies

• Giuliana Muraca,
• María Esperanza Ruiz,
• Rocío C. Gambaro,
• Sebastián Scioli-Montoto,
• María Laura Sbaraglini,
• Gisel Padula,
• José Sebastián Cisneros,
• Cecilia Yamil Chain,
• Vera A. Álvarez,
• Cristián Huck-Iriart,
• Guillermo R. Castro,
• María Belén Piñero,
• Matias Ildebrando Marchetto,
• Catalina Alba Soto,
• Germán A. Islan and
• Alan Talevi

Beilstein J. Nanotechnol. 2023, 14, 804–818, doi:10.3762/bjnano.14.66

• , which could be referred to the melting points of the lipid and the surfactant, respectively. This suggests that no other endothermic changes occur to the formulation constituents or its load during the high-energy sonication procedure. A peak matching the phase transition peak of BNZ did not appear in

The microstrain-accompanied structural phase transition from h-MoO₃ to α-MoO₃ investigated by in situ X-ray diffraction

• Zeqian Zhang,
• Honglong Shi,
• Boxiang Zhuang,
• Minting Luo and
• Zhenfei Hu

Beilstein J. Nanotechnol. 2023, 14, 692–700, doi:10.3762/bjnano.14.55

• Sciences, Beijing, 100190, China 10.3762/bjnano.14.55 Abstract In situ X-ray diffraction indicates that the structural phase transition from h-MoO3 to α-MoO3 is a first-order transition with a phase transition temperature range of 378.5–443.1 °C. The linear coefficients of thermal expansion of h-MoO3 are

• molecules from the octahedra tunnel causes the octahedra chains to shrink and the octahedra tunnel to expand. When the phase transition occurs, the anomalous expansion of the MoO6 octahedra tunnel ruptures the Mo–O2 bonds, forming individual MoO6 octahedron zigzag chains that then share corners to generate

• octahedron layers in the ⟨100⟩α direction. The octahedron layers are bonded by van der Waals interactions in the ⟨010⟩α direction, crystalizing into the α-MoO3 structure. Keywords: microstrain; molybdenum oxide; phase transition; thermal expansion; Introduction Molybdenum exhibits oxidation states ranging

The influence of structure and local structural defects on the magnetic properties of cobalt nanofilms

• Alexander Vakhrushev,
• Aleksey Fedotov,
• Olesya Severyukhina and
• Anatolie Sidorenko

Beilstein J. Nanotechnol. 2023, 14, 23–33, doi:10.3762/bjnano.14.3

• not decreasing. Evolutionary analysis of the structural transformations of substances finds wide application in many areas of science and technology, including physics of multicomponent systems. One promising application of multicomponent systems is the development of phase-transition heat-storage

• in [33]. In the considered material, the thermodynamic first-order phase transition is observed near room temperature. Heating the material above the transition temperature changes its magnetic behavior from antiferromagnetic to ferromagnetic and is accompanied by a significant change in the crystal

• lattice structure and an increase in electrical conductivity. The material is promising for applied research and development of new spintronics devices, energy management sensors, and magnetic recording media. Research focused on specific application devices based on phase-transition memory state is

Induced electric conductivity in organic polymers

• Konstantin Y. Arutyunov,
• Anatoli S. Gurski,
• Vladimir V. Artemov,
• Alexander L. Vasiliev,
• Azat R. Yusupov,
• Danfis D. Karamov and
• Alexei N. Lachinov

Beilstein J. Nanotechnol. 2022, 13, 1551–1557, doi:10.3762/bjnano.13.128

• cryogenic temperatures, the current value from 0.1 to 100 μA was chosen so that its increase by an order of magnitude would not lead to a noticeable shift in the temperature of the superconducting phase transition. All experiments were carried out in a 4He direct pumped cryostat. The semiconducting

• the same sample coincided with an accuracy of several mK. An analysis was made of the degradation of samples over time. The difference between two measurements of the same sample was 3 months, while the shift in the beginning of the phase transition was minimal δТс ≈ 0.01 K. It has been established

Structural studies and selected physical investigations of LiCoO₂ obtained by combustion synthesis

• Monika Michalska,
• Paweł Ławniczak,
• Tomasz Strachowski,
• Adam Ostrowski and
• Waldemar Bednarski

Beilstein J. Nanotechnol. 2022, 13, 1473–1482, doi:10.3762/bjnano.13.121

• by the phase transition from a hexagonal structure to a monoclinic structure, which occurs during cathode charging at a potential of approximately 4.2 V [5][6][7][8][9]. A decrease in capacity (approx. 50%) is observed during the cycling charging–discharging processes, caused by the dissolution of

Effects of focused electron beam irradiation parameters on direct nanostructure formation on Ag surfaces

• Jānis Sniķeris,
• Vjačeslavs Gerbreders,
• Andrejs Bulanovs and
• Ēriks Sļedevskis

Beilstein J. Nanotechnol. 2022, 13, 1004–1010, doi:10.3762/bjnano.13.87

• surface layer of twinned B19’ martensite being pulled up along the growth of the nanodot. After heating the Ni40Ti60 surface to 100 °C, where the shape memory effect is expected to be activated due to the phase transition from B19’ martensite to B2 austenite, the surface surrounding the nanodot was found

Experimental and theoretical study of field-dependent spin splitting at ferromagnetic insulator–superconductor interfaces

• Peter Machon,
• Michael J. Wolf,
• Detlef Beckmann and
• Wolfgang Belzig

Beilstein J. Nanotechnol. 2022, 13, 682–688, doi:10.3762/bjnano.13.60

• from a first-order to a second-order phase transition for large spin mixing angles. The experimentally found differential conductance of an EuS-Al heterostructure is compared with the theoretical calculation. With the assumption of a uniform spin mixing angle that depends on the externally applied

• periodic in δφ and hence the maximum spin mixing is reached at δφ = π). For small ε’ or high temperature, the phase transition is of second order. For larger ε’ and low temperature, the phase transition becomes of first order. In this case, the self-consistency relation becomes multi-valued, and a

• the inner peak is broadened, and finally becomes a wide and flat band. Besides this, the self-consistency relation for thin films produces the typical step-like first-order phase transition at the critical δφ (here always plotted for the upper branch of Figure 2), while especially in the case ε’ = 1 a

Plasma modes in capacitively coupled superconducting nanowires

• Alex Latyshev,
• Andrew G. Semenov and
• Andrei D. Zaikin

Beilstein J. Nanotechnol. 2022, 13, 292–297, doi:10.3762/bjnano.13.24

• fluctuations in a somewhat different manner as compared to the noninteracting case [13][14][15][16]. Likewise, the logarithmic interaction between different quantum phase slips mediated by such plasma modes gets modified, implying a shift of the superconductor–insulator quantum phase transition in a way to

Effects of temperature and repeat layer spacing on mechanical properties of graphene/polycrystalline copper nanolaminated composites under shear loading

• Chia-Wei Huang,
• Man-Ping Chang and
• Te-Hua Fang

Beilstein J. Nanotechnol. 2021, 12, 863–877, doi:10.3762/bjnano.12.65

• 300 K. Under shear loading stacking faults occur in the polycrystalline Cu (Figure 5a3,c2) with a phase transition from the face-centered cubic (FCC, blue) to the hexagonal closest packed (HCP, green part) structure. Besides, several kinds of dislocations are formed in the polycrystalline Cu, as shown

Comprehensive review on ultrasound-responsive theranostic nanomaterials: mechanisms, structures and medical applications

• Sepand Tehrani Fateh,
• Lida Moradi,
• Elmira Kohan,
• Michael R. Hamblin and
• Amin Shiralizadeh Dezfuli

Beilstein J. Nanotechnol. 2021, 12, 808–862, doi:10.3762/bjnano.12.64

• quest for more potent treatment and diagnostic procedures. In this review, the mechanisms of action of US-responsive nanomaterials, including cavitation, acoustic radiation force (ARF), phase transition, reactive oxygen species (ROS) production, and hyperthermia will be discussed in the first step. A

Controlling the electronic and physical coupling on dielectric thin films

• Philipp Hurdax,
• Michael Hollerer,
• Larissa Egger,
• Georg Koller,
• Xiaosheng Yang,
• Anja Haags,
• Serguei Soubatch,
• Frank Stefan Tautz,
• Mathias Richter,
• Alexander Gottwald,
• Peter Puschnig,
• Martin Sterrer and
• Michael G. Ramsey

Beilstein J. Nanotechnol. 2020, 11, 1492–1503, doi:10.3762/bjnano.11.132

• critical factor for this phase transition is the density of charged molecules present on the surface. The planarization and electrostatic interaction of the charged molecules with the substrate can be expected to reduce the mobility of the charged molecules. These charged molecules will in turn restrict

Superconductor–insulator transition in capacitively coupled superconducting nanowires

• Alex Latyshev,
• Andrew G. Semenov and
• Andrei D. Zaikin

Beilstein J. Nanotechnol. 2020, 11, 1402–1408, doi:10.3762/bjnano.11.124

• superconductor–insulator phase transition in each of the wires is controlled not only by its own parameters but also by those of the neighboring wire as well as by mutual capacitance. We argue that superconducting nanowires with properly chosen parameters may turn insulating once they are brought sufficiently

• superconducting properties, its total resistance remains non-zero and even tends to increase with decreasing temperature thus indicating an insulating behavior at T → 0. At zero temperature the transition between these two types of behavior comes as a quantum phase transition (QPT) driven by the wire diameter [5

• applied to a variety of problems in condensed matter theory, such as, the problem of weak Coulomb blockade in tunnel [19][20][21][22] and non-tunnel [23][24][25] barriers between normal metals or that of a dissipative phase transition in resistively shunted Josephson junctions [19][26][27][28]. In the

Nonadiabatic superconductivity in a Li-intercalated hexagonal boron nitride bilayer

• Kamila A. Szewczyk,
• Izabela A. Domagalska,
• Artur P. Durajski and
• Radosław Szczęśniak

Beilstein J. Nanotechnol. 2020, 11, 1178–1189, doi:10.3762/bjnano.11.102

• superconductor–metal phase transition is about 25 K [41] for the Coulomb pseudopotential μ* = 0.14 (identical to the experimental value of μ* obtained for graphene [46]). The expected value of TC is much higher than the maximum temperature that was achieved in graphene intercalated with alkali metals (TC = 8.1 K

Epitaxial growth and superconducting properties of thin-film PdFe/VN and VN/PdFe bilayers on MgO(001) substrates

• Wael M. Mohammed,
• Igor V. Yanilkin,
• Amir I. Gumarov,
• Airat G. Kiiamov,
• Roman V. Yusupov and
• Lenar R. Tagirov

Beilstein J. Nanotechnol. 2020, 11, 807–813, doi:10.3762/bjnano.11.65

• R(T) behavior of VN/MgO(011) samples in [42], which was explained by a change in the electron/phonon scattering amplitude upon the structural phase transition from cubic to tetragonal at Ts = 250 K. Below 50 K the R(T) dependence saturates approaching the residual resistance originating, in general

• , from impurities and imperfections. Further cooling results in the phase transition to the superconducting state as it is shown in Figure 5b. The RRR value of 5.2 and the room-temperature resistivity of 42.5 μΩ·cm for the 30 nm thick VN film are among the best values obtained to date [42][43][44][45

Multilayer capsules made of weak polyelectrolytes: a review on the preparation, functionalization and applications in drug delivery

• Varsha Sharma and
• Anandhakumar Sundaramurthy

Beilstein J. Nanotechnol. 2020, 11, 508–532, doi:10.3762/bjnano.11.41