Anomalous Thickness Dependence of the Saturation Magnetization in Fe–Ni Invar Alloy Films

Konno, Masaki

doi:10.1143/jpsj.49.1185

Cited by 12 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Co n particles of 1.8e 4.4 nm sizes carry magnetic moments that are w20% higher than the bulk value [341].The moment of a Co surface atom is enhanced by 32% compared to the bulk value of 1.73 m B [645]. In the temperature range of 77e570 K, the M S of FeeNi alloy films increase gradually when the film thickness is decreased from 75 to 35 nm [646]. In a Stern-Gerlach experiment conducted at w20 K, Cox et al [638] measured the magnetic properties of isolated iron-atom clusters containing 2e17 atoms and Fe monoxide and dioxide clusters and found that the spin per atom of iron clusters was larger than that of the bulk counterpart.…”

Section: Discussionmentioning

confidence: 99%

Size dependence of nanostructures: Impact of bond order deficiency

Sun

2007

Progress in Solid State Chemistry

821

717

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Size dependence of nanostructures: Impact of bond order deficiency

Sun

2007

Progress in Solid State Chemistry

821

717

View full text Add to dashboard Cite

“…M s of a 1.8 nm sized Co particles is about 30% higher than that of the bulk [132]. M s of Fe-Ni alloy films at 77 < T < 570 K increases gradually when D is dropped from 75 to 35 nm [138]. In a Stern-Gerlach experiment conducted at 22 K, M s of freestanding Fe nanoclusters containing 2-17 atoms to be larger than that of the bulk counterparts [133].…”

Section: Magnetizationmentioning

confidence: 89%

Size Dependence of Structures and Properties of Magnetic Materials

Jiang¹,

Lang²

2007

TONANOJ

View full text Add to dashboard Cite

Due to the involvement of high portion of atomic coordination imperfection in surfaces and interfaces, the properties of magnetic nanocrystals dramatically differ from that of the corresponding bulk counterparts, which have led to a surge in both experimental and theoretical investigations in the past decades. This review summarizes the studies for these size-dependent magnetic properties, and additional thermal or phase stabilities, and mechanical properties. To interpret the above phenomena, a thermodynamic model for the size dependence and interface dependences of these properties is described, which is based on Lindemann s criterion for melting, Mott s expression for the vibrational melting entropy, and Shi s model for the size-dependent melting temperature. The model without any adjustable parameter is confirmed by a large number of experimental results, and helps us to understand the structures and properties of the magnetic nanocrystals. Moreover, other theoretical works on the above properties are also mentioned and commented.

show abstract

“…339 The moment of a Co surface atom is enhanced by 32% compared to the bulk value of 1.73 μ B . 608 In the temperature range of 77 K and 570 K, the M S of Fe-Ni alloy films increase gradually 609 when the film thickness is decreased from 75 nm to 35 nm. Using a laser vaporization of an iron rod inside the throat of a high-pressure pulsed nozzle, Cox et al 601 firstly measured the magnetic properties of isolated iron-atom clusters containing 2 to 17 atoms and Fe monoxides and dioxides clusters at 22 K. The metal cluster beam passes through a Stern-Gerlach magnet.…”

Section: Discussionmentioning

confidence: 99%