کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1627285 | 1516449 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultrasonic studies on colossal magnetoresistive Nd0.67A0.33MnO3 (A = Ca, Sr)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Ultrasonic studies on colossal magnetoresistive Nd0.67A0.33MnO3 (A = Ca, Sr) Ultrasonic studies on colossal magnetoresistive Nd0.67A0.33MnO3 (A = Ca, Sr)](/preview/png/1627285.png)
چکیده انگلیسی
The colossal magnetoresistive material Nd0.67A0.33MnO3 (A = Ca, Sr) has been investigated through sound velocity measurements using pulse-transmission method at 1 MHz. Significant hardening of longitudinal velocity below Curie temperature (TC) has been observed, which is attributed to significant decrease of the static Jahn-Teller distortion of the MnO6 octahedra due to spin–lattice coupling in this material. The elastic moduli at room temperature have been determined and porosity corrections have been reported. The compositional dependence of elastic moduli is interpreted in terms strength of interatomic bonding, which a consequence of A-site ionic radius 〈rA〉.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 424, Issues 1–2, 9 November 2006, Pages 46–50
Journal: Journal of Alloys and Compounds - Volume 424, Issues 1–2, 9 November 2006, Pages 46–50
نویسندگان
Y.S. Reddy, V. Prashanth Kumar, P. Kistaiah, C. Vishnuvardhan Reddy,