Exploring Characteristic Electronic States in Filled Skutterudites by Ultrasonic Measurements –Multipole Ordered State in SmRu4P12–

Masahito Yoshizawa; Peijie Sun; Mitsuteru Nakamura; Yoshiki Nakanishi; Chihiro Sekine; Ichimin Shirotani; Daisuke Kikuchi; Hitoshi Sugawara; Hideyuki Sato

doi:10.1143/jpsjs.77sa.84

Exploring Characteristic Electronic States in Filled Skutterudites by Ultrasonic Measurements –Multipole Ordered State in SmRu4P12–

Journal of the Physical Society of Japan ◽

10.1143/jpsjs.77sa.84 ◽

2008 ◽

Vol 77 (Suppl.A) ◽

pp. 84-89 ◽

Cited By ~ 3

Author(s):

Masahito Yoshizawa ◽

Peijie Sun ◽

Mitsuteru Nakamura ◽

Yoshiki Nakanishi ◽

Chihiro Sekine ◽

...

Keyword(s):

Electronic States ◽

Ultrasonic Measurements ◽

Filled Skutterudites ◽

Ordered State

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Features of Electronic States in the Highly-Correlated Electronic System Sr1-xNdxMnO3 around x = 0.50

Materials Science Forum ◽

10.4028/www.scientific.net/msf.879.1766 ◽

2016 ◽

Vol 879 ◽

pp. 1766-1771 ◽

Cited By ~ 2

Author(s):

Rina Shimasaki ◽

Ayumi Shiratani ◽

Hiroki Sato ◽

Yasuhide Inoue ◽

Yasumasa Koyama

Keyword(s):

Electronic States ◽

Electronic System ◽

Electron System ◽

The State ◽

Charge Ordering ◽

Type Orbital ◽

Charge Modulations ◽

Highly Correlated ◽

A Charge ◽

Ordered State

In the highly-correlated electron system Sr1-xNdxMnO3 (SNMO) having the simple perovskite structure, there are interesting electronic states, which are related to degrees of charge, orbital, and spin freedoms for eg electrons in Mn ions. Among these states, in the case of SNMO, the C-, A-and CE-type antiferromagnetic states were reported for 0.20 ≤ x ≤ 0.38, for 0.38 ≤ x ≤ 0.48, and for 0.48 ≤ x ≤ 0.52, respectively. The points to note here are that these antiferromagnetic states are directly associated with corresponding orbital orderings, and that the CE-type state also accompanies charge ordering. Because of these features, we were interested in the (A → CE) state change in SNMO. The crystallographic features of prepared SNMO samples with 0.46 ≤ x ≤ 0.50 have thus been investigated mainly by means of a transmission electron microscope equipped with a low-temperature holder. As a result, the state around 100 K for x = 0.48 was first understood to be identified as the Imma state, which includes a large number of orbital-modulated (OM) regions with an average size of about 10 nm. The feature of such regions is that the orbital modulation has an incommensurate periodicity and a charge modulation is absent in them. On the other hand, the CE-type state having the commensurate orbital and charge modulations was also confirmed to be present for x = 0.50. In addition to these two states, the state around 100 K for x = 0.46 was found to be characterized by the coexistence state consisting of the C-type orbital-ordered state and the Imma states including OM regions. In other words, the presence of the A-type orbital-ordered state could not be confirmed in the temperature range between 300 K and about 100 K for 0.46 ≤ x ≤ 0.50 in this study.

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Novel Electronic States Realized in the Filled Skutterudites Containing Rare Earth Elements with More than One 4f-Electrons

ChemInform ◽

10.1002/chin.200726204 ◽

2007 ◽

Vol 38 (26) ◽

Author(s):

H. Sato ◽

D. Kikuchi ◽

K. Tanaka ◽

H. Aoki ◽

K. Kuwahara ◽

...

Keyword(s):

Rare Earth ◽

Rare Earth Elements ◽

Electronic States ◽

Filled Skutterudites

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Novel electronic states realized in the filled skutterudites containing rare earth elements with more than one 4f-electrons

Journal of Magnetism and Magnetic Materials ◽

10.1016/j.jmmm.2006.10.006 ◽

2007 ◽

Vol 310 (2) ◽

pp. 188-194 ◽

Cited By ~ 35

Author(s):

H. Sato ◽

D. Kikuchi ◽

K. Tanaka ◽

H. Aoki ◽

K. Kuwahara ◽

...

Keyword(s):

Rare Earth ◽

Rare Earth Elements ◽

Electronic States ◽

Filled Skutterudites

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Integration of Core-Edge Spectroscopy Methods for the Study of Polymers

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010016323x ◽

1996 ◽

Vol 54 ◽

pp. 154-155

Author(s):

E. G. Rightor

Keyword(s):

Excited State ◽

Polymer Blends ◽

Gas Phase ◽

Spatial Resolution ◽

High Spatial Resolution ◽

Electronic States ◽

Core Electron ◽

Bulk Solids ◽

Development Application

Core edge spectroscopy methods are versatile tools for investigating a wide variety of materials. They can be used to probe the electronic states of materials in bulk solids, on surfaces, or in the gas phase. This family of methods involves promoting an inner shell (core) electron to an excited state and recording either the primary excitation or secondary decay of the excited state. The techniques are complimentary and have different strengths and limitations for studying challenging aspects of materials. The need to identify components in polymers or polymer blends at high spatial resolution has driven development, application, and integration of results from several of these methods.

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