Abstract
Powder X-ray diffraction measurements on intermetallic compounds RMna (R: Y, Pr, Nd, Sm and Gd) have been made in a temperature range from 69 to 300 K. Below Tn, every sample shows a large volume expansion, being as large as 4.6% for YMn2. In addition, PrMna and NdMn2 having the hexagonal C14 type of crystal structure are distorted into monoclinic below Tn- On the other hand, SmMn2 having the same C14 type structure is distorted into orthorhombic. On the basis of a theory of magnetoelastic coupling the directions of magnetization of these compounds below were determined. The cubic Cl5 type YMna shows a very small and probably rhombohedral distortion below Tn, whereas the same Cl 5 type GdMni shows no symmetry change.
| Original language | English |
|---|---|
| Pages (from-to) | 591-597 |
| Number of pages | 7 |
| Journal | journal of the physical society of japan |
| Volume | 54 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jan 1 1985 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
Cite this
X-Ray Study of Crystal Distortions in RMn2 Compounds (R : Y, Pr, Nd, Sm and Gd). / Tagawa, Yukiharu; Sakurai, Junji; Komura, Yukitomo; Wada, Hirofumi; Shiga, Masayuki; Nakamura, Yoji.
In: journal of the physical society of japan, Vol. 54, No. 2, 01.01.1985, p. 591-597.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - X-Ray Study of Crystal Distortions in RMn2 Compounds (R
T2 - Y, Pr, Nd, Sm and Gd)
AU - Tagawa, Yukiharu
AU - Sakurai, Junji
AU - Komura, Yukitomo
AU - Wada, Hirofumi
AU - Shiga, Masayuki
AU - Nakamura, Yoji
PY - 1985/1/1
Y1 - 1985/1/1
N2 - Powder X-ray diffraction measurements on intermetallic compounds RMna (R: Y, Pr, Nd, Sm and Gd) have been made in a temperature range from 69 to 300 K. Below Tn, every sample shows a large volume expansion, being as large as 4.6% for YMn2. In addition, PrMna and NdMn2 having the hexagonal C14 type of crystal structure are distorted into monoclinic below Tn- On the other hand, SmMn2 having the same C14 type structure is distorted into orthorhombic. On the basis of a theory of magnetoelastic coupling the directions of magnetization of these compounds below were determined. The cubic Cl5 type YMna shows a very small and probably rhombohedral distortion below Tn, whereas the same Cl 5 type GdMni shows no symmetry change.
AB - Powder X-ray diffraction measurements on intermetallic compounds RMna (R: Y, Pr, Nd, Sm and Gd) have been made in a temperature range from 69 to 300 K. Below Tn, every sample shows a large volume expansion, being as large as 4.6% for YMn2. In addition, PrMna and NdMn2 having the hexagonal C14 type of crystal structure are distorted into monoclinic below Tn- On the other hand, SmMn2 having the same C14 type structure is distorted into orthorhombic. On the basis of a theory of magnetoelastic coupling the directions of magnetization of these compounds below were determined. The cubic Cl5 type YMna shows a very small and probably rhombohedral distortion below Tn, whereas the same Cl 5 type GdMni shows no symmetry change.
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U2 - 10.1143/JPSJ.54.591
DO - 10.1143/JPSJ.54.591
M3 - Article
VL - 54
SP - 591
EP - 597
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 2
ER -