SCOPUS 정보 검색 플랫폼

Physical Review B - Condensed Matter and Materials Physics

Volumn 80, Issue 22, 2009, Pages

Evidence of kinetic-energy-driven antiferromagnetism in double perovskites: A first-principles study of La-doped Sr2 FeMoO6

(3) Sanyal, Prabuddha a Das, Hena a Saha Dasgupta, T a

a S N BOSE NATIONAL CENTRE FOR BASIC SCIENCES (India)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 77954713346 PISSN: 10980121 EISSN: 1550235X Source Type: Journal
DOI: 10.1103/PhysRevB.80.224412 Document Type: Article

Times cited : (54)

References (51)

1
- 0032531698
- K.-I. Kobayashi, T. Kimura, H. Sawada, K. Terakura, and Y. Tokura, Nature (London) 395, 677 (1998).
- (1998) Nature (London) , vol.395 , pp. 677
- Kobayashi, K.-I.¹ Kimura, T.² Sawada, H.³ Terakura, K.⁴ Tokura, Y.⁵

2
- 21044438072
- 6
- DOI 10.1021/ja0512576
- M. Azuma, K. Takata, T. Saito, S. Ishiwata, Y. Shimakawa, and M. Takano, J. Am. Chem. Soc. 127, 8889 (2005). 10.1021/ja0512576 (Pubitemid 40872233)
- (2005) Journal of the American Chemical Society , vol.127 , Issue.24 , pp. 8889-8892
- Azuma, M.¹ Takata, K.² Saito, T.³ Ishiwata, S.⁴ Shimakawa, Y.⁵ Takano, M.⁶

3
- 25144517364
- 6
- DOI 10.1002/adma.200500737
- N. S. Rogado, J. Li, A. W. Sleight, and M. A. Subramanian, Adv. Mater. (Weinheim, Ger.) 17, 2225 (2005). 10.1002/adma.200500737 (Pubitemid 41338529)
- (2005) Advanced Materials , vol.17 , Issue.18 , pp. 2225-2227
- Rogado, N.S.¹ Li, J.² Sleight, A.W.³ Subramanian, M.A.⁴

4
- 43249110069
- Electronic structure, phonons, and dielectric anomaly in ferromagnetic insulating double pervoskite La2NiMnO6
- DOI 10.1103/PhysRevLett.100.186402
- H. Das, U. V. Waghmare, T. Saha-Dasgupta, and D. D. Sarma, Phys. Rev. Lett. 100, 186402 (2008). 10.1103/PhysRevLett.100.186402 (Pubitemid 351654648)
- (2008) Physical Review Letters , vol.100 , Issue.18 , pp. 186402
- Das, H.¹ Waghmare, U.V.² Saha-Dasgupta, T.³ Sarma, D.D.⁴

5
- 44349180261
- Moderate to large magneto-optical signals in high Tc double perovskites
- DOI 10.1063/1.2936304
- H. Das, M. De Raychaudhury, and T. Saha-Dasgupta, Appl. Phys. Lett. 92, 201912 (2008). 10.1063/1.2936304 (Pubitemid 351733878)
- (2008) Applied Physics Letters , vol.92 , Issue.20 , pp. 201912
- Das, H.¹ De Raychaudhury, M.² Saha-Dasgupta, T.³

6
- 0344442404
- 10.1103/PhysRevB.68.144431
- J. B. Philipp, P. Majewski, L. Alff, A. Erb, R. Gross, T. Graf, M. S. Brandt, J. Simon, T. Walther, W. Mader, D. Topwal, and D. D. Sarma, Phys. Rev. B 68, 144431 (2003). 10.1103/PhysRevB.68.144431
- (2003) Phys. Rev. B , vol.68 , pp. 144431
- Philipp, J.B.¹ Majewski, P.² Alff, L.³ Erb, A.⁴ Gross, R.⁵ Graf, T.⁶ Brandt, M.S.⁷ Simon, J.⁸ Walther, T.⁹ Mader, W.¹⁰ Topwal, D.¹¹ Sarma, D.D.¹²

7
- 0034857834
- 6 related compouds
- DOI 10.1016/S1359-0286(01)00014-6, PII S1359028601000146
- D. D. Sarma, Curr. Opin. Solid State Mater. Sci. 5, 261 (2001). 10.1016/S1359-0286(01)00014-6 (Pubitemid 32836254)
- (2001) Current Opinion in Solid State and Materials Science , vol.5 , Issue.4 , pp. 261-268
- Sarma, D.D.¹

8
- 0001170846
- 10.1016/S0038-1098(99)00079-4
- B. Garcia Landa, C. Ritter, M. R. Ibarra, J. Blasco, P. A. Algarabel, R. Mahendiran, and J. García, Solid State Commun. 110, 435 (1999). 10.1016/S0038-1098(99)00079-4
- (1999) Solid State Commun. , vol.110 , pp. 435
- Garcia Landa, B.¹ Ritter, C.² Ibarra, M.R.³ Blasco, J.⁴ Algarabel, P.A.⁵ Mahendiran, R.⁶ García, J.⁷

9
- 0034511393
- 6 perovskites
- DOI 10.1088/0953-8984/12/50/312
- B. Martinez, J. Navarro, L. Balcells, and J. Fontcuberta, J. Phys.: Condens. Matter 12, 10515 (2000). 10.1088/0953-8984/12/50/312 (Pubitemid 32086201)
- (2000) Journal of Physics Condensed Matter , vol.12 , Issue.50 , pp. 10515-10521
- Martinez, B.¹ Navarro, J.² Balcells, Ll.³ Fontcuberta, J.⁴

10
- 34147221485
- Intergranular magnetoresistance in Sr2FeMoO6 from a magnetic tunnel barrier mechanism across grain boundaries
- DOI 10.1103/PhysRevLett.98.157205
- D. D. Sarma, S. Ray, K. Tanaka, M. Kobayashi, A. Fujimori, P. Sanyal, H. R. Krishnamurthy, and C. Dasgupta, Phys. Rev. Lett. 98, 157205 (2007). 10.1103/PhysRevLett.98.157205 (Pubitemid 46582691)
- (2007) Physical Review Letters , vol.98 , Issue.15 , pp. 157205
- Sarma, D.D.¹ Ray, S.² Tanaka, K.³ Kobayashi, M.⁴ Fujimori, A.⁵ Sanyal, P.⁶ Krishnamurthy, H.R.⁷ Dasgupta, C.⁸

11
- 0001315217
- 10.1063/1.125478
- C. L. Yuan, S. G. Wang, W. H. Song, T. Yu, J. M. Dai, S. L. Ye, and Y. P. Sun, Appl. Phys. Lett. 75, 3853 (1999). 10.1063/1.125478
- (1999) Appl. Phys. Lett. , vol.75 , pp. 3853
- Yuan, C.L.¹ Wang, S.G.² Song, W.H.³ Yu, T.⁴ Dai, J.M.⁵ Ye, S.L.⁶ Sun, Y.P.⁷

12
- 0033875756
- 6
- DOI 10.1016/S0038-1098(00)00079-X
- D. D. Sarma, E. V. Sampathkumaran, R. Sugata, R. Nagarajan, S. Majumdar, A. Kumar, G. Nalini, and T. N. Gururow, Solid State Commun. 114, 465 (2000). 10.1016/S0038-1098(00)00079-X (Pubitemid 30585672)
- (2000) Solid State Communications , vol.114 , Issue.9 , pp. 465-468
- Sarma, D.D.¹ Sampathkumaran, E.V.² Ray, S.³ Nagarajan, R.⁴ Majumdar, S.⁵ Kumar, A.⁶ Nalini, G.⁷ Guru Row, T.N.⁸

13
- 0036543601
- 6
- DOI 10.1016/S0304-8853(01)00998-2, PII S0304885301009982
- Cz. Kapusta, P. C. Riedi, D. Zajac, M. Sikora, J. M. De Teresa, L. Morellon, and M. R. Ibarra, J. Magn. Magn. Mater. 242-245, 701 (2002). 10.1016/S0304-8853(01)00998-2 (Pubitemid 34719337)
- (2002) Journal of Magnetism and Magnetic Materials , vol.242-245 , Issue.PART II , pp. 701-703
- Kapusta, Cz.¹ Riedi, P.C.² Zajac, D.³ Sikora, M.⁴ De Teresa, J.M.⁵ Morellon, L.⁶ Ibarra, M.R.⁷

14
- 21344441050
- 6: XPS and XES studies
- DOI 10.1088/0953-8984/17/27/007, PII S0953898405942471
- K. Kuepper, M. Kadiroglu, A. V. Postnikov, K. C. Prince, M. Matteucci, V. R. Galakhov, H. Hesse, G. Borstel, and M. Neumann, J. Phys.: Condens. Matter 17, 4309 (2005). 10.1088/0953-8984/17/27/007 (Pubitemid 40902991)
- (2005) Journal of Physics Condensed Matter , vol.17 , Issue.27 , pp. 4309-4317
- Kuepper, K.¹ Kadiroglu, M.² Postnikov, A.V.³ Prince, K.C.⁴ Matteucci, M.⁵ Galakhov, V.R.⁶ Hesse, H.⁷ Borstel, G.⁸ Neumann, M.⁹

15
- 0001688371
- 10.1103/PhysRevB.61.422
- Y. Tomioka, T. Okuda, Y. Okimoto, R. Kumai, K.-I. Kobayashi, and Y. Tokura, Phys. Rev. B 61, 422 (2000). 10.1103/PhysRevB.61.422
- (2000) Phys. Rev. B , vol.61 , pp. 422
- Tomioka, Y.¹ Okuda, T.² Okimoto, Y.³ Kumai, R.⁴ Kobayashi, K.-I.⁵ Tokura, Y.⁶

16
- 33645030806
- Structural and magnetic properties of Sr2 Fe1+x Mo1-x O6 (-1 x 0.25)
- DOI 10.1103/PhysRevB.73.094419, 094419
- Dinesh Topwal, D. D. Sarma, H. Kato, Y. Tokura, and M. Avignon, Phys. Rev. B 73, 094419 (2006). 10.1103/PhysRevB.73.094419 (Pubitemid 43418686)
- (2006) Physical Review B - Condensed Matter and Materials Physics , vol.73 , Issue.9 , pp. 1-5
- Topwal, D.¹ Sarma, D.D.² Kato, H.³ Tokura, Y.⁴ Avignon, M.⁵

17
- 0034683356
- 10.1103/PhysRevLett.85.2549
- D. D. Sarma, P. Mahadevan, T. Saha-Dasgupta, S. Ray, and A. Kumar, Phys. Rev. Lett. 85, 2549 (2000). 10.1103/PhysRevLett.85.2549
- (2000) Phys. Rev. Lett. , vol.85 , pp. 2549
- Sarma, D.D.¹ Mahadevan, P.² Saha-Dasgupta, T.³ Ray, S.⁴ Kumar, A.⁵

18
- 0142213739
- 10.1103/PhysRevB.68.104411
- Z. Szotek, W. M. Temmerman, A. Svane, L. Petit, and H. Winter, Phys. Rev. B 68, 104411 (2003). 10.1103/PhysRevB.68.104411
- (2003) Phys. Rev. B , vol.68 , pp. 104411
- Szotek, Z.¹ Temmerman, W.M.² Svane, A.³ Petit, L.⁴ Winter, H.⁵

19
- 34347390706
- 10.1103/PhysRevB.75.220404
- V. Kanchana, G. Vaitheeswaran, M. Alouani, and A. Delin, Phys. Rev. B 75, 220404 (R) (2007). 10.1103/PhysRevB.75.220404
- (2007) Phys. Rev. B , vol.75 , pp. 220404
- Kanchana, V.¹ Vaitheeswaran, G.² Alouani, M.³ Delin, A.⁴

20
- 0001101365
- 10.1103/PhysRevB.65.144446
- I. V. Solovyev, Phys. Rev. B 65, 144446 (2002). 10.1103/PhysRevB.65. 144446
- (2002) Phys. Rev. B , vol.65 , pp. 144446
- Solovyev, I.V.¹

21
- 4243481487
- 10.1103/PhysRevB.64.024424
- A. Chattopadhyay and A. J. Millis, Phys. Rev. B 64, 024424 (2001). 10.1103/PhysRevB.64.024424
- (2001) Phys. Rev. B , vol.64 , pp. 024424
- Chattopadhyay, A.¹ Millis, A.J.²

22
- 33748133826
- Ferromagnetic-antiferromagnetic transition in double perovskites
- DOI 10.1016/j.physb.2006.05.165, PII S0921452606010386, LAWM3M-05
- O. Navarro, E. Carvajal, B. Aguilar, and M. Avignon, Physica B 384, 110 (2006). 10.1016/j.physb.2006.05.165 (Pubitemid 44310939)
- (2006) Physica B: Condensed Matter , vol.384 , Issue.1-2 , pp. 110-112
- Navarro, O.¹ Carvajal, E.² Aguilar, B.³ Avignon, M.⁴

23
- 0035627706
- 10.1143/JPSJ.70.1433
- J. Kanamori and K. Terakura, J. Phys. Soc. Jpn. 70, 1433 (2001). 10.1143/JPSJ.70.1433
- (2001) J. Phys. Soc. Jpn. , vol.70 , pp. 1433
- Kanamori, J.¹ Terakura, K.²

24
- 29144532515
- Ferromagnetic transition in ordered double perovskites and related alloys
- DOI 10.1140/epjb/e2005-00386-9
- E. Carvajal, O. Navarro, R. Allub, M. Avignon, and B. Alascio, Eur. Phys. J. B 48, 179 (2005). 10.1140/epjb/e2005-00386-9 (Pubitemid 41813606)
- (2005) European Physical Journal B , vol.48 , Issue.2 , pp. 179-187
- Carvajal, E.¹ Navarro, O.² Allub, R.³ Avignon, M.⁴ Alascio, B.⁵

25
- 33749169015
- Mean-field theory for double perovskites: Coupling between itinerant electron spins and localized spins
- DOI 10.1103/PhysRevB.74.094429
- L. Brey and M. J. Calderón, S. Das Sarma, and F. Guinea, Phys. Rev. B 74, 094429 (2006). 10.1103/PhysRevB.74.094429 (Pubitemid 44477077)
- (2006) Physical Review B - Condensed Matter and Materials Physics , vol.74 , Issue.9 , pp. 094429
- Brey, L.¹ Calderon, M.J.² Das Sarma, S.³ Guinea, F.⁴

26
- 0038715047
- 10.1103/PhysRevB.67.214423
- J. L. Alonso, L. A. Fernandez, F. Guinea, F. Lesmes, and V. Martin-Mayor, Phys. Rev. B 67, 214423 (2003). 10.1103/PhysRevB.67.214423
- (2003) Phys. Rev. B , vol.67 , pp. 214423
- Alonso, J.L.¹ Fernandez, L.A.² Guinea, F.³ Lesmes, F.⁴ Martin-Mayor, V.⁵

27
- 70249084125
- 10.1103/PhysRevB.80.054411
- P. Sanyal and P. Majumdar, Phys. Rev. B 80, 054411 (2009). 10.1103/PhysRevB.80.054411
- (2009) Phys. Rev. B , vol.80 , pp. 054411
- Sanyal, P.¹ Majumdar, P.²

28
- 0034895491
- 10.1103/PhysRevB.63.180407
- Z. Fang, K. Terakura, and J. Kanamori, Phys. Rev. B 63, 180407 (R) (2001). 10.1103/PhysRevB.63.180407
- (2001) Phys. Rev. B , vol.63 , pp. 180407
- Fang, Z.¹ Terakura, K.² Kanamori, J.³

29
- 0000840812
- 10.1103/PhysRevLett.83.5118
- J. van den Brink, G. Khaliullin, and D. Khomskii, Phys. Rev. Lett. 83, 5118 (1999). 10.1103/PhysRevLett.83.5118
- (1999) Phys. Rev. Lett. , vol.83 , pp. 5118
- Van Den Brink, J.¹ Khaliullin, G.² Khomskii, D.³

30
- 58149247753
- 10.1063/1.3043586
- A. Kahoul, A. Azizi, S. Colis, D. Stoeffler, R. Moubah, G. Schmerber, C. Leuvrey, and A. Dinia, J. Appl. Phys. 104, 123903 (2008). 10.1063/1.3043586
- (2008) J. Appl. Phys. , vol.104 , pp. 123903
- Kahoul, A.¹ Azizi, A.² Colis, S.³ Stoeffler, D.⁴ Moubah, R.⁵ Schmerber, G.⁶ Leuvrey, C.⁷ Dinia, A.⁸

31
- 17444405317
- 6
- DOI 10.1016/j.elspec.2005.01.216, PII S036820480500280X
- T. Saitoh, M. Nakatake, H. Nakajima, O. Morimoto, A. Kakizaki, Sh. Xu, Y. Moritomo, N. Hamada, and Y. Aiura, J. Electron Spectrosc. Relat. Phenom. 144-147, 601 (2005). 10.1016/j.elspec.2005.01.216 (Pubitemid 40538896)
- (2005) Journal of Electron Spectroscopy and Related Phenomena , vol.144-147 , pp. 601-603
- Saitoh, T.¹ Nakatake, M.² Nakajima, H.³ Morimoto, O.⁴ Kakizaki, A.⁵ Xu, S.⁶ Moritomo, Y.⁷ Hamada, N.⁸ Aiura, Y.⁹

32
- 12844286241
- 10.1103/PhysRevB.47.558;
- G. Kresse and J. Hafner, Phys. Rev. B 47, 558 (1993) 10.1103/PhysRevB.47. 558
- (1993) Phys. Rev. B , vol.47 , pp. 558
- Kresse, G.¹ Hafner, J.²

33
- 2442537377
- 10.1103/PhysRevB.54.11169
- G. Kresse and J. Furthmuller, Phys. Rev. B 54, 11169 (1996). 10.1103/PhysRevB.54.11169
- (1996) Phys. Rev. B , vol.54 , pp. 11169
- Kresse, G.¹ Furthmuller, J.²

34
- 0034670864
- Muffin-tin orbitals of arbitrary order
- DOI 10.1103/PhysRevB.62.R16219, R16219
- O. K. Andersen and T. Saha-Dasgupta, Phys. Rev. B 62, R16219 (2000). 10.1103/PhysRevB.62.R16219 (Pubitemid 32372694)
- (2000) Physical Review B - Condensed Matter and Materials Physics , vol.62 , Issue.24
- Andersen, O.K.¹ Saha-Dasgupta, T.²

35
- 23244460838
- 10.1103/PhysRevB.46.6671;
- J. P. Perdew, J. A. Chevary, S. H. Vosko, K. A. Jackson, M. R. Pederson, D. J. Singh, and C. Fiolhais, Phys. Rev. B 46, 6671 (1992) 10.1103/PhysRevB.46. 6671
- (1992) Phys. Rev. B , vol.46 , pp. 6671
- Perdew, J.P.¹ Chevary, J.A.² Vosko, S.H.³ Jackson, K.A.⁴ Pederson, M.R.⁵ Singh, D.J.⁶ Fiolhais, C.⁷

36
- 0001622167
- 10.1103/PhysRevB.48.4978.2
- J. P. Perdew, J. A. Chevary, S. H. Vosko, K. A. Jackson, M. R. Pederson, D. J. Singh, and C. Fiolhais, Phys. Rev. B 48, 4978 (E) (1993). 10.1103/PhysRevB.48.4978.2
- (1993) Phys. Rev. B , vol.48 , pp. 4978
- Perdew, J.P.¹ Chevary, J.A.² Vosko, S.H.³ Jackson, K.A.⁴ Pederson, M.R.⁵ Singh, D.J.⁶ Fiolhais, C.⁷

37
- 0012842779
- 10.1088/0953-8984/9/4/002
- V. I. Anisimov, F. Aryasetiawan, and A. I. Liechtenstein, J. Phys. Condens. Matter 9, 767 (1997). 10.1088/0953-8984/9/4/002
- (1997) J. Phys. Condens. Matter , vol.9 , pp. 767
- Anisimov, V.I.¹ Aryasetiawan, F.² Liechtenstein, A.I.³

38
- 25744460922
- 10.1103/PhysRevB.50.17953;
- P. E. Blöchl, Phys. Rev. B 50, 17953 (1994) 10.1103/PhysRevB.50. 17953
- (1994) Phys. Rev. B , vol.50 , pp. 17953
- Blöchl, P.E.¹

39
- 0011236321
- 10.1103/PhysRevB.59.1758
- G. Kresse and D. Joubert, Phys. Rev. B 59, 1758 (1999). 10.1103/PhysRevB.59.1758
- (1999) Phys. Rev. B , vol.59 , pp. 1758
- Kresse, G.¹ Joubert, D.²

40
- 23244461569
- 10.1103/PhysRevB.12.3060
- O. K. Andersen, Phys. Rev. B 12, 3060 (1975). 10.1103/PhysRevB.12.3060
- (1975) Phys. Rev. B , vol.12 , pp. 3060
- Andersen, O.K.¹

41
- 0035448606
- 10.1103/PhysRevB.64.092411
- J. Navarro, C. Frontera, Ll. Balcells, B. Martínez, and J. Fontcuberta, Phys. Rev. B 64, 092411 (2001). 10.1103/PhysRevB.64.092411
- (2001) Phys. Rev. B , vol.64 , pp. 092411
- Navarro, J.¹ Frontera, C.² Balcells, Ll.³ Martínez, B.⁴ Fontcuberta, J.⁵

42
- 0141540779
- 10.1103/PhysRevB.68.012412
- C. Frontera, D. Rubi, J. Navarro, J. L. Garcia-Munoz, J. Fontcuberta, and C. Ritter, Phys. Rev. B 68, 012412 (2003). 10.1103/PhysRevB.68.012412
- (2003) Phys. Rev. B , vol.68 , pp. 012412
- Frontera, C.¹ Rubi, D.² Navarro, J.³ Garcia-Munoz, J.L.⁴ Fontcuberta, J.⁵ Ritter, C.⁶

43
- 77954700308
- (private communication).
- Carlos Frontera (private communication).
- Frontera, C.¹

44
- 77954745298
- Optimization has been carried out both in terms of GGA and GGA+U. The results are found to differ only marginally. The values quoted in Table were obtained with GGA.
- Optimization has been carried out both in terms of GGA and GGA + U. The results are found to differ only marginally. The values quoted in Table were obtained with GGA.

45
- 19544364472
- 10.1103/PhysRevB.70.054423
- J. Navarro, J. Fontcuberta, M. Izquierdo, J. Avila, and M. C. Asensio, Phys. Rev. B 70, 054423 (2004). 10.1103/PhysRevB.70.054423
- (2004) Phys. Rev. B , vol.70 , pp. 054423
- Navarro, J.¹ Fontcuberta, J.² Izquierdo, M.³ Avila, J.⁴ Asensio, M.C.⁵

46
- 0000926444
- 10.1103/PhysRevB.44.13319
- Z. Zhang and S. Satpathy, Phys. Rev. B 44, 13319 (1991). 10.1103/PhysRevB.44.13319
- (1991) Phys. Rev. B , vol.44 , pp. 13319
- Zhang, Z.¹ Satpathy, S.²

47
- 33644780642
- Origin of ferromagnetism and its pressure and doping dependence in Tl2Mn2O7
- DOI 10.1103/PhysRevLett.96.087205, 087205
- T. Saha-Dasgupta, Molly De Raychaudhury, and D. D. Sarma, Phys. Rev. Lett. 96, 087205 (2006). 10.1103/PhysRevLett.96.087205 (Pubitemid 43336527)
- (2006) Physical Review Letters , vol.96 , Issue.8 , pp. 1-4
- Saha-Dasgupta, T.¹ Deraychaudhury, M.² Sarma, D.D.³

48
- 77954722888
- There are nine degrees of freedom per Fe-Mo pair, consisting of three at Fe site and six at Mo site.
- There are nine degrees of freedom per Fe-Mo pair, consisting of three at Fe site and six at Mo site.

49
- 68749116621
- 10.1103/PhysRevLett.103.046403
- C. Meneghini, Sugata Ray, F. Liscio, F. Bardelli, S. Mobilio, and D. D. Sarma, Phys. Rev. Lett. 103, 046403 (2009). 10.1103/PhysRevLett.103.046403
- (2009) Phys. Rev. Lett. , vol.103 , pp. 046403
- Meneghini, C.¹ Ray, S.² Liscio, F.³ Bardelli, F.⁴ Mobilio, S.⁵ Sarma, D.D.⁶

50
- 77954743881
- (private communication).
- S. Ray (private communication).
- Ray, S.¹

51
- 77954728777
- (unpublished).
- H. Das, P. Sanyal, T. Saha-Dasgupta, and D. D. Sarma (unpublished).
- Das, H.¹ Sanyal, P.² Saha-Dasgupta, T.³ Sarma, D.D.⁴

* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.